Pu-Be neutron source simulation method, equipment, medium and program product

Abstract

The invention discloses a Pu-Be neutron source simulation method and device, a medium and a program product. The method comprises the following steps: acquiring first source intensity data of a target neutron source; wherein the target neutron source comprises a Pu-Be neutron source with a first pellet structure; arranging a simulated neutron source with a second pellet structure; wherein a PuO2 material and a Be material are arranged in the second core block structure; and recursively adjusting the core block parameters of the second core block structure, so that the second source intensity data of the second core block structure are matched with the first source intensity data.

Description

Technical Field

[0001] The present application relates to the technical field of neutron source simulation, and in particular to a Pu-Be neutron source simulation method, device, medium and program product. Background Art

[0002] Pu-Be source is a long-life start-up neutron source, mainly containing PuO2 powder and Be powder. The two are evenly mixed and pressed into a source core block. 238 The alpha particles produced by Pu decay can 9 Be undergoes (α, n) reaction to produce neutrons. Since the neutron source will threaten the health of researchers in the process of producing neutrons, how to design and manufacture Pu-Be neutron sources while reducing the health threat to researchers has become a technical problem that needs to be solved urgently. Summary of the invention

[0003] Based on the above technical problems, the embodiments of the present application provide a Pu-Be neutron source simulation method, device, medium and program product.

[0004] The technical solution provided by the embodiment of the present application is as follows:

[0005] The present application embodiment first provides a Pu-Be neutron source simulation method, the method comprising:

[0006] Acquiring first source intensity data of a target neutron source; wherein the target neutron source comprises a Pu-Be neutron source having a first core block structure;

[0007] A simulated neutron source having a second pellet structure is provided; wherein the second pellet structure is provided with PuO2 material and Be material;

[0008] The core block parameters of the second core block structure are recursively adjusted so that the second source intensity data of the second core block structure matches the first source intensity data.

[0009] In some embodiments, the provision of a simulated neutron source having a second pellet structure includes:

[0010] dividing the hollow space in the second core block structure to obtain a subspace set;

[0011] The PuO2 material and the Be material are respectively arranged in the subspaces of the subspace set to obtain the simulated neutron source.

[0012] In some embodiments, the PuO2 material and the Be material are respectively arranged in the subspaces of the subspace set to obtain the simulated neutron source, comprising:

[0013] Dividing the subspace into a first airspace and a second airspace; wherein the shape of the first airspace is different from the shape of the second airspace; and the second airspace surrounds the first airspace;

[0014] The PuO2 material is arranged in the first airspace, and the Be material is arranged in the second airspace to obtain the simulated neutron source.

[0015] In some embodiments, the recursive adjustment of the core block parameters of the second core block structure includes:

[0016] The core block size of the second core block structure is recursively adjusted; wherein the core block parameters include the core block size.

[0017] In some embodiments, the recursive adjustment of the core block parameters of the second core block structure includes:

[0018] Acquire the airspace parameters of the second core block structure; wherein the airspace parameters include a first size of the first airspace and a second size of the second airspace; the first airspace and the second airspace are located in a subspace of a subspace set obtained by dividing the second core block structure; the shape of the first airspace is different from the shape of the second airspace; the second airspace surrounds the first airspace;

[0019] The first size and the second size are recursively adjusted; wherein the core block parameters include the first size and the second size.

[0020] In some embodiments, the recursive adjustment of the core block parameters of the second core block structure includes:

[0021] Recursively adjusting the particle size of the PuO2 material in the second pellet structure; wherein the pellet parameters include the particle size.

[0022] In some embodiments, the recursive adjustment of the particle size of the PuO2 material in the second pellet structure comprises:

[0023] Acquiring a first material density of the target neutron source;

[0024] The particle size is recursively adjusted under the condition that a second material density of the second core block structure matches the first material density.

[0025] An embodiment of the present application also provides a Pu-Be neutron source simulation device, which includes a processor and a memory; wherein a computer program is stored in the memory; when the computer program is executed by the processor, the Pu-Be neutron source simulation method as described above can be implemented.

[0026] An embodiment of the present application further provides a computer-readable storage medium, in which a computer program is stored; when the computer program is executed by a processor of an electronic device, the Pu-Be neutron source simulation method as described above can be implemented.

[0027] An embodiment of the present application further provides a computer program product, which includes a computer program; when the computer program is executed by a processor of an electronic device, it can implement any of the above-mentioned Pu-Be neutron source simulation methods.

[0028] The Pu-Be neutron source simulation method provided in the embodiment of the present application, after obtaining the first source intensity data of the target neutron source represented by the Pu-Be neutron source having a first core block structure, sets a simulated neutron source having a second core block structure, and the second core block structure is provided with PuO2 material and Be material. On this basis, the core block parameters of the second core block structure are recursively adjusted so that the second source intensity data of the second core block structure matches the first source intensity data. In this way, through the above operations, not only the method for adjusting the simulated neutron source is determined, but also the direction of adjusting the simulated neutron source is pointed out, so that targeted adjustment of the simulated neutron source can be achieved; and, by matching the second source strength data of the second core block structure with the first source strength data as the basis for recursively adjusting the core block parameters of the second core block structure, the targeted adjustment of the core block parameters of the second core block structure can be improved, thereby improving the efficiency of adjusting the core block parameters and improving the probability that the source strength of the simulated neutron source after the core block parameters are adjusted matches the first source strength data; on this basis, the simulated neutron source represented by the second core block structure after the core block parameters are adjusted can achieve accurate simulation and matching of the target neutron source, so that by adjusting the parameters of the simulated neutron source, accurate simulation of the radiation performance of the target neutron source can be achieved, thereby reducing the threat to the health of professional and technical personnel posed by the neutron source during the production and design process. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 A schematic diagram of a Pu-Be neutron source simulation method provided in an embodiment of the present application;

[0030] Figure 2 A schematic diagram of the structure of subspace division in the second core block structure provided in an embodiment of the present application;

[0031] Figure 3 A schematic diagram of the structure of a Pu-Be neutron source simulation device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0032] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application.

[0033] It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0034] Pu-Be source is a long-life start-up neutron source, mainly containing PuO2 powder and Be powder. The two are evenly mixed and pressed into a source core block. 238 The alpha particles produced by Pu decay can 9 Be undergoes an (α, n) reaction to produce neutrons.

[0035] In practical applications, since the neutron source will threaten the health of researchers in the process of generating neutrons, in order to achieve accurate design of Pu-Be neutron source, it is necessary to simulate and calculate the neutron source intensity in advance, and obtain the feeding amount of PuO2 powder and Be powder and the Pu-Be core block structure through optimization iteration, so as to provide a basis for the manufacture of neutron source; at the same time, PuO2 and Be particles have independent structures, and the size of the two materials particles, the uniform distribution or random distribution of the particles will affect the neutron source intensity. In summary, how to achieve accurate simulation of neutron source has become a technical problem that needs to be solved urgently.

[0036] Based on the above technical problems, the embodiments of the present application provide a Pu-Be neutron source simulation method, device, medium and program product.

[0037] The present application embodiment first provides a Pu-Be neutron source simulation method, Figure 1 A schematic diagram of the process flow of the Pu-Be neutron source simulation method provided in the embodiment of the present application is shown in FIG. Figure 1 As shown, the process may include the following steps:

[0038] Step 101: Acquire first source intensity data of a target neutron source.

[0039] Wherein, the target neutron source includes a Pu-Be neutron source having a first core block structure.

[0040] In one embodiment, the target neutron source may include a physical neutron source that has been set up from a physical level.

[0041] In one embodiment, the first core block structure may be a hollow cylindrical structure, and the hollow space of the cylindrical structure may be filled with PuO2 powder and Be powder in a uniformly mixed manner.

[0042] In one embodiment, the first source intensity data may include the target neutron source intensity. 238 The alpha particles produced by Pu decay can 9 The number of neutrons produced by the (α, n) reaction of Be.

[0043] In one embodiment, the first source intensity data may be determined by measuring the state of neutrons radiated by the target neutron source within a specified period of time.

[0044] Step 102: Setting a simulated neutron source having a second core block structure.

[0045] Wherein, PuO2 material and Be material are arranged in the second core block structure.

[0046] In one embodiment, the second core block structure may be the same as or different from the first core block structure.

[0047] In one embodiment, the second core block structure may be embodied in the form of a hollow cube.

[0048] In one embodiment, simulating a neutron source may include a virtualized neutron source configured via a software environment simulation.

[0049] In one embodiment, the simulated neutron source can be set up in any of the following ways:

[0050] In the hollow space of the cube corresponding to the second core block structure, PuO2 powder corresponding to the PuO2 material and Be powder corresponding to the Be material are set according to simulation parameters to obtain a simulated neutron source; exemplarily, the simulation parameters may include the weight of the PuO2 powder, the spatial area occupied by the PuO2 powder in the hollow space, the weight of the Be powder, the spatial area occupied by the Be powder in the hollow space, and the content ratio between the PuO2 powder and the Be powder, etc.

[0051] A simulated neutron source is set up through a simulation of a specified software simulation and emulation environment; wherein the software simulation and emulation environment may have a general software package for simulating neutrons, photons, electrons or coupled neutron / photon / electron states in a three-dimensional complex geometric structure, and the software simulation and emulation environment may have the ability to calculate eigenvalue problems of nuclear critical systems; illustratively, the software simulation and emulation environment may include Monte Carlo N Particle Transport Code (MCNP).

[0052] Step 103: recursively adjust the core block parameters of the second core block structure so that the second source intensity data of the second core block structure matches the first source intensity data.

[0053] In one embodiment, the core block parameters may include the geometry of the second core block structure, the morphology of the hollow space inside the second core block structure, the filling state of PuO2 powder and Be powder in the hollow space of the second core block structure, and the content ratio between PuO2 powder and Be powder.

[0054] In one embodiment, the second source intensity data may include the number of neutrons radiated by a simulated neutron source having a second pellet structure.

[0055] In one implementation, the second source strength data may be calculated in the following manner:

[0056] Through the specified software simulation and emulation environment, the structural parameters of the second core block structure, the morphology of the hollow space inside the second core block structure, the filling state of PuO2 powder and Be powder in the hollow space of the second core block structure, and the content ratio between PuO2 powder and Be powder are comprehensively calculated and considered to obtain the second source strength data.

[0057] In one embodiment, adjusting the core block parameters of the second core block structure may be achieved by:

[0058] After the kth core block parameter adjustment is completed and the kth core block parameter is obtained, the simulated neutron source corresponding to the kth core block parameter is calculated through the specified software simulation and simulation environment to obtain the kth second source strength data. If the kth difference between the first source strength data and the kth second source strength data is greater than the difference threshold, the k+1 adjustment strategy is determined based on the kth difference, and then the kth core block parameter is adjusted based on the k+1 adjustment strategy to obtain the k+1th core block parameter. The above source strength calculation and comparison process is recursively executed until the difference between the source strength data corresponding to the second core block structure and the first source strength data is less than the difference threshold. At this time, a target simulated neutron source matching the first source strength data or the target neutron source can be obtained. Wherein, k is an integer greater than or equal to 1.

[0059] From the above, it can be seen that the Pu-Be neutron source simulation method provided in the embodiment of the present application, after obtaining the first source intensity data of the target neutron source represented by the Pu-Be neutron source having a first core block structure, sets a simulated neutron source having a second core block structure, and the second core block structure is provided with PuO2 material and Be material. On this basis, the core block parameters of the second core block structure are recursively adjusted so that the second source intensity data of the second core block structure matches the first source intensity data. In this way, through the above operations, not only the method for adjusting the simulated neutron source is determined, but also the direction of adjusting the simulated neutron source is pointed out, so that targeted adjustment of the simulated neutron source can be achieved; and, by matching the second source strength data of the second core block structure with the first source strength data as the basis for recursively adjusting the core block parameters of the second core block structure, the targeted adjustment of the core block parameters of the second core block structure can be improved, thereby improving the efficiency of adjusting the core block parameters and improving the probability that the source strength of the simulated neutron source after the core block parameters are adjusted matches the first source strength data; on this basis, the simulated neutron source represented by the second core block structure after the core block parameters are adjusted can achieve accurate simulation and matching of the target neutron source, so that by adjusting the parameters of the simulated neutron source, accurate simulation of the radiation performance of the target neutron source can be achieved, thereby reducing the threat to the health of professional and technical personnel posed by the neutron source during the production and design process.

[0060] Based on the above embodiments, in the Pu-Be neutron source simulation method provided in the embodiments of the present application, a simulated neutron source having a second pellet structure is provided, which can be achieved by the following steps:

[0061] Step A1: segment the hollow space in the second core block structure to obtain a subspace set.

[0062] In one embodiment, the hollow space may include a hollow inner cubic space inside a hollow cube structure represented by the second core block structure.

[0063] In one embodiment, the size and / or shape of each subspace in the subspace set may be different.

[0064] In one implementation, the size and / or shape of each subspace in the subspace set may be the same.

[0065] In one implementation, the subspace set can be obtained by:

[0066] The hollow space is evenly divided to obtain a subspace set; illustratively, the subspaces in the subspace set can all be embodied in the form of cubes.

[0067] Step A2: respectively set PuO2 material and Be material in the subspaces of the subspace set to obtain a simulated neutron source.

[0068] In one embodiment, the kth material parameter of the PuO2 material and Be material set in the kth subspace of the subspace set and the k+1th material parameter of the PuO2 material and Be material set in the k+1th subspace of the subspace set may be the same or different; wherein k is an integer greater than or equal to 1.

[0069] In one embodiment, the kth material parameter and the k+1th material parameter may include the ratio of the PuO2 material and the Be material set in their respective corresponding subspaces, the setting method, and the relative position relationship between the two materials.

[0070] From the above, it can be seen that the Pu-Be neutron source simulation method provided in the embodiment of the present application realizes a fine-grained division of the hollow space in the second core block structure by dividing the hollow space in the second core block structure to obtain a subspace set; and, PuO2 material and Be material are respectively set in the subspaces of the subspace set to obtain a simulated neutron source, so that the simulated neutron source can be provided with PuO2 material and Be material within the spatial range corresponding to each subspace, thereby improving the uniformity and stability of neutron radiation of the simulated neutron source.

[0071] Based on the foregoing embodiment, in the Pu-Be neutron source simulation method provided in the embodiment of the present application, PuO2 material and Be material are respectively set in the subspace of the subspace set to obtain a simulated neutron source, which can be achieved by the following steps:

[0072] Step B1, dividing the subspace into a first airspace and a second airspace.

[0073] The shape of the first airspace is different from that of the second airspace; and the second airspace surrounds the first airspace.

[0074] In one embodiment, the first airspace may be spherical, and the second airspace may be a cube with a hollow spherical interior and an exterior in contact with the inner wall of the subspace.

[0075] In one implementation, the first airspace may be located at the geometric center of the subspace, and the size of the first airspace and the size of the second airspace may be flexibly adjusted, which is not limited in this embodiment of the present application.

[0076] Figure 2 A schematic diagram of the structure of the subspace division in the second core block structure provided in an embodiment of the present application, such as Figure 2As shown, first, the second core block structure 2 is evenly divided into nine (nine in the example in the figure, but not limited to nine) small cubes, thereby obtaining a subspace set including nine small cubes; secondly, for the subspace represented by a small cube in the subspace set, a spherical first airspace 201 can be obtained by dividing at its geometric center, and the airspace in the subspace excluding the first airspace 201 can be divided into a second airspace 202.

[0077] Step B2: PuO2 material is placed in the first airspace, and Be material is placed in the second airspace to obtain a simulated neutron source.

[0078] In one embodiment, the first airspace may be filled entirely or partially with PuO2 material, and the second airspace may be filled entirely or partially with Be material, thereby obtaining a simulated neutron source.

[0079] In one embodiment, the first airspace may be completely filled with PuO2 material, and the second airspace may be completely filled with Be material at the same time, thereby obtaining a simulated neutron source.

[0080] As can be seen from the above, the Pu-Be neutron source simulation method provided in the embodiment of the present application is to obtain a simulated neutron source by dividing the subspace into a first airspace and a second airspace, and the shape of the first airspace is different from the shape of the second airspace, and the second airspace surrounds the first airspace, and PuO2 material is set in the first airspace, and Be material is set in the second airspace. In this way, through the above operation, not only the setting method of PuO2 material and Be material in each subspace of the subspace set is clarified, but also the relative setting relationship between PuO2 material and Be material in the subspace is clarified, and the balance between PuO2 material and Be material in each subspace can be achieved, so as to improve the balance of the neutron state and characteristics of the simulated neutron source radiation.

[0081] Based on the above embodiments, in the Pu-Be neutron source simulation method provided in the embodiments of the present application, recursive adjustment of the pellet parameters of the second pellet structure can be achieved in the following manner:

[0082] The core block size of the second core block structure is recursively adjusted.

[0083] The core block parameters include the core block size.

[0084] In one embodiment, when the second core block structure is a cube, the core block size may include the edge length or side length of the second core block structure.

[0085] In one embodiment, when it is determined that the degree of difference between the second source strength data and the first source strength data is greater than a difference threshold, the adjustment step and adjustment direction of the core block size can be determined based on the degree of difference, and then the core block size is adjusted based on the adjustment step and the adjustment direction. During the process of adjusting the core block size, the second source strength data is continuously detected, and the relationship between the degree of difference between the second source strength data and the first source strength data and the difference threshold is determined to determine whether to continue to recursively adjust the core block size; wherein the adjustment direction may include the direction of increasing or decreasing the core block size, and the difference threshold may be less than or equal to 5% of the first source strength data.

[0086] As can be seen from the above, in the Pu-Be neutron source simulation method provided in the embodiment of the present application, the core block parameters include the core block size, and recursively adjusting the core block parameters of the second core block structure can be achieved by recursively adjusting the core block size of the second core block structure. In this way, through the above operation, the macroscopic dimension of the second core block structure can be adjusted in a targeted and continuous manner.

[0087] Based on the above-mentioned embodiment, in the Pu-Be neutron source simulation method provided in the embodiment of the present application, recursive adjustment of the pellet parameters of the second pellet structure can also be achieved by the following steps:

[0088] Step C1, obtaining the spatial parameters of the second core block interface.

[0089] Among them, the airspace parameters include a first size of the first airspace and a second size of the second airspace; the first airspace and the second airspace are located in a subspace of a subspace set obtained by dividing the second core block structure; the shape of the first airspace is different from the shape of the second airspace; and the second airspace surrounds the first airspace.

[0090] In one embodiment, the first size and the second size may be sizes that have been predetermined when setting the simulated neutron source.

[0091] Step C2: recursively adjust the first size and the second size.

[0092] The core block parameters include a first size and a second size.

[0093] In one implementation, recursively adjusting the first size and the second size may be achieved in the following manner:

[0094] When it is determined that the degree of difference between the second source strength data and the first source strength data is greater than the difference threshold, the step size and direction of adjusting the first size and the second size can be determined based on the degree of difference, and then the first size and the second size are adjusted based on the step size and the direction. In the process of adjusting the first size and the second size, the second source strength data is continuously detected, and the relationship between the degree of difference between the second source strength data and the first source strength data and the difference threshold is determined to determine whether to continue to recursively adjust the first size and the second size; wherein the above-mentioned direction may include the direction of increasing or decreasing the first size and the second size.

[0095] As can be seen from the above, in the Pu-Be neutron source simulation method provided in the embodiment of the present application, after obtaining the airspace parameters of the second core block structure, the recursive adjustment of the core block parameters of the second core block structure is achieved by recursively adjusting the first size and the second size, and the airspace parameters include the first size of the first airspace and the second size of the second airspace, the first airspace and the second airspace are located in the subspace of the subspace set obtained by dividing the second airspace structure, the shape of the first airspace is different from the shape of the second airspace, and the second airspace surrounds the first airspace. In this way, through the above operation, the adjustment of the size of the first airspace and the second airspace in the second core block structure is achieved, so that the targeted fine-grained adjustment of each subspace in the second core block structure can be achieved.

[0096] Based on the above embodiments, in the Pu-Be neutron source simulation method provided in the embodiments of the present application, recursive adjustment of the pellet parameters of the second pellet structure can also be achieved in the following manner:

[0097] The particle size of the PuO2 material in the second pellet structure is recursively adjusted.

[0098] In one embodiment, the PuO 2 material may consist of PuO 2 particles of uniform size.

[0099] In one embodiment, recursive adjustment of the particle size of the PuO2 material can be achieved by:

[0100] When it is determined that the degree of difference between the second source intensity data and the first source intensity data is greater than a difference threshold, the particle step size and particle direction for adjusting the particle size can be determined based on the degree of difference, and then the particle size is adjusted based on the particle step size and the particle direction. During the particle size adjustment process, the second source intensity data is continuously detected, and the relationship between the degree of difference between the second source intensity data and the first source intensity data and the difference threshold is determined to determine whether to continue to recursively adjust the particle size; wherein the above-mentioned particle direction may include the direction of increasing or decreasing the particle size.

[0101] From the above, it can be seen that in the Pu-Be neutron source simulation method provided in the embodiment of the present application, the recursive adjustment of the core block parameters of the second core block structure can also be achieved by recursively adjusting the particle size of the PuO2 material in the second core block structure. In this way, the microscopic dimension of the PuO2 material in the second core block structure is refined and targeted. Adjustment is achieved.

[0102] Based on the above embodiments, in the Pu-Be neutron source simulation method provided in the embodiments of the present application, recursive adjustment of the particle size of the PuO2 material in the second pellet structure can also be achieved in the following manner:

[0103] A first material density of the target neutron source is obtained; and the particle size is recursively adjusted under the condition that the second material density of the second core block structure matches the first material density.

[0104] In one embodiment, the first material density may include the density of PuO 2 material and Be material in the target neutron source.

[0105] In one embodiment, when recursively adjusting the particle size, the method provided in the aforementioned embodiment can also be combined to synchronously recursively adjust the core block size and / or spatial parameters of the second core block structure to achieve all-round, multi-dimensional and flexible adjustment of the core block parameters of the second core block structure.

[0106] As can be seen from the above, the Pu-Be neutron source simulation method provided in the embodiment of the present application, after obtaining the first material density of the target neutron source, recursively adjusts the particle size under the condition that the second material density of the second core block structure matches the first material density. In this way, through the above operation, in the process of fine-grained adjustment of the second material density of the second core block structure, the matching relationship between the first material density and the second material density can also be taken into account, thereby improving the accuracy of particle size adjustment.

[0107] It should be noted that when the difference between the second source strength data of the second core block data after the core block parameters are adjusted and the first source strength data is less than or equal to the difference threshold, the core block parameters adjusted by the aforementioned embodiment can be called matching core block parameters or optimal core block parameters. By matching core block parameters or optimal core block parameters, the target neutron source can be accurately simulated, and a data basis can be provided for the simulation and manufacture of Pu-Be neutron sources, thereby improving the efficiency of Pu-Be neutron source simulation and manufacture; and the matching core block parameters obtained in the above manner can also serve as data support for experimental simulation of neutron sources.

[0108] Based on the above embodiments, the present application also provides a Pu-Be neutron source simulation device. Figure 3 A schematic diagram of the structure of a Pu-Be neutron source simulation device provided in an embodiment of the present application is shown in FIG. Figure 3As shown, the Pu-Be neutron source simulation device may include a processor 301 and a memory 302; wherein the memory 302 stores a computer program; when the computer program is executed by the processor 301, the Pu-Be neutron source simulation method as described above can be implemented.

[0109] Based on the foregoing embodiments, an embodiment of the present application further provides a computer-readable storage medium, in which a computer program is stored; when the computer program is executed by a processor of an electronic device, the Pu-Be neutron source simulation method as described in any of the foregoing can be implemented.

[0110] Based on the foregoing embodiments, an embodiment of the present application further provides a computer program product, which includes a computer program; when the computer program is executed by a processor of an electronic device, it can implement the Pu-Be neutron source simulation method as described in any of the foregoing.

[0111] The above description of various embodiments tends to emphasize the differences between the various embodiments. The same or similar aspects can be referenced to each other, and for the sake of brevity, they will not be repeated herein.

[0112] The methods disclosed in the various method embodiments provided in this application can be arbitrarily combined without conflict to obtain new method embodiments.

[0113] The features disclosed in the various product embodiments provided in this application can be arbitrarily combined without conflict to obtain new product embodiments.

[0114] The features disclosed in the various method or device embodiments provided in this application can be arbitrarily combined without conflict to obtain new method embodiments or device embodiments.

[0115] It should be noted that the above-mentioned computer-readable storage medium can be a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically erasable programmable read-only memory (EEPROM), a magnetic random access memory (FRAM), a flash memory (Flash Memory), a magnetic surface memory, an optical disc, or a compact disc read-only memory (CD-ROM) and other memories; it can also be various electronic devices including one or any combination of the above-mentioned memories, such as mobile phones, computers, tablet devices, personal digital assistants, etc.

[0116] It should be noted that, in this article, the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprises a ..." does not exclude the existence of other identical elements in the process, method, article or device including the element.

[0117] The serial numbers of the above-mentioned embodiments of the present application are for description only and do not represent the advantages or disadvantages of the embodiments.

[0118] Through the description of the above implementation methods, those skilled in the art can clearly understand that the above-mentioned embodiment methods can be implemented by means of software plus necessary general hardware nodes, and of course can also be implemented by hardware, but in many cases the former is a better implementation method. Based on such an understanding, the technical solution of the present application, or the part that contributes to the prior art, can be embodied in the form of a software product, which is stored in a storage medium (such as ROM / RAM, magnetic disk, optical disk), and includes a number of instructions for a terminal device (which can be a mobile phone, computer, server, air conditioner, or network device, etc.) to execute the methods described in each embodiment of the present application.

[0119] The present application is described with reference to the flowcharts and / or block diagrams of the methods, devices (systems), and computer program products according to the embodiments of the present application. It should be understood that each process and / or box in the flowchart and / or block diagram, as well as the combination of the processes and / or boxes in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing device to generate a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the processes in the flowchart and / or block diagram. Figure 1 A process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0120] These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing device to operate in a specific manner, so that the instructions stored in the computer-readable memory produce an article of manufacture comprising an instruction device, which implements the process Figure 1 A process or multiple processes and / or boxes Figure 1 A function specified in one or more boxes.

[0121] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operating steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing instructions for implementing the process. Figure 1 A process or multiple processes and / or boxes Figure 1 The steps for the functions specified in one or more boxes.

[0122] The above are only preferred embodiments of the present application, and are not intended to limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made using the contents of the present application specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A Pu-Be neutron source simulation method, characterized in that: The method comprises: Acquiring first source intensity data of a target neutron source; wherein the target neutron source comprises a Pu-Be neutron source having a first core block structure; A simulated neutron source having a second pellet structure is provided; wherein the second pellet structure is provided with PuO2 material and Be material; The core block parameters of the second core block structure are recursively adjusted so that the second source intensity data of the second core block structure matches the first source intensity data.

2. The method according to claim 1, characterized in that: The provision of a simulated neutron source having a second pellet structure comprises: dividing the hollow space in the second core block structure to obtain a subspace set; The PuO2 material and the Be material are respectively arranged in the subspaces of the subspace set to obtain the simulated neutron source.

3. The method according to claim 2, characterized in that The PuO2 material and the Be material are respectively arranged in the subspaces of the subspace set to obtain the simulated neutron source, comprising: Dividing the subspace into a first airspace and a second airspace; wherein the shape of the first airspace is different from the shape of the second airspace; and the second airspace surrounds the first airspace; The PuO2 material is arranged in the first airspace, and the Be material is arranged in the second airspace to obtain the simulated neutron source.

4. The method according to claim 1, characterized in that: The recursive adjustment of the core block parameters of the second core block structure comprises: The core block size of the second core block structure is recursively adjusted; wherein the core block parameters include the core block size.

5. The method according to claim 1, characterized in that: The recursive adjustment of the core block parameters of the second core block structure comprises: Acquire the airspace parameters of the second core block structure; wherein the airspace parameters include a first size of the first airspace and a second size of the second airspace; the first airspace and the second airspace are located in a subspace of a subspace set obtained by dividing the second core block structure; the shape of the first airspace is different from the shape of the second airspace; the second airspace surrounds the first airspace; The first size and the second size are recursively adjusted; wherein the core block parameters include the first size and the second size.

6. The method according to claim 1, characterized in that The recursive adjustment of the core block parameters of the second core block structure comprises: Recursively adjusting the particle size of the PuO2 material in the second pellet structure; wherein the pellet parameters include the particle size.

7. The method according to claim 6, characterized in that The recursive adjustment of the particle size of the PuO2 material in the second core block structure comprises: Acquiring a first material density of the target neutron source; The particle size is recursively adjusted under the condition that a second material density of the second core block structure matches the first material density.

8. A Pu-Be neutron source simulation device, characterized in that: The Pu-Be neutron source simulation device comprises a processor and a memory; wherein the memory stores a computer program; when the computer program is executed by the processor, the Pu-Be neutron source simulation method according to any one of claims 1 to 7 can be implemented.

9. A computer-readable storage medium, characterized in that: The storage medium stores a computer program; when the computer program is executed by a processor of an electronic device, the Pu-Be neutron source simulation method according to any one of claims 1 to 7 can be implemented.

10. A computer program product, characterized in that The program product includes a computer program; when the computer program is executed by a processor of an electronic device, it can implement the Pu-Be neutron source simulation method as described in any one of claims 1 to 7.

Images