A source of radiation

Abstract

A kind of ray source, comprising: shell, the shell has cavity in, the cavity has radioactive gas in, the cavity is opened with emission port, the emission port is equipped with encapsulation film, the encapsulation film is used to seal the emission port;Wherein, the width of emission port is B, the depth of emission port is H, the length of emission port is L, and satisfy: 2mm≤H≤10mm, 7mm≤B≤20mm, 30mm≤L≤60mm, 2105mm 3 ≤L*B*H≤9800mm 3 , 0.7≤B / H≤10.The scheme of the application can improve the resolution of ray source, and can ensure the accuracy of ray source.

Description

Technical Field

[0001] This invention relates to the field of radiation source technology, and more specifically to a radiation source. Background Technology

[0002] In the field of nondestructive testing, X-ray sources are required. As testing standards improve, there are also higher requirements for the resolution and accuracy of X-ray sources.

[0003] To improve resolution, the size of the radiation source's emission port needs to be reduced to limit the divergence angle. However, limiting the divergence angle increases the source's output loss, causing many effective particles to collide with the source shell and fail to exit through the emission port, resulting in a reduced number of emitted particles. According to the statistical laws of nuclear radiation measurements, this leads to increased signal fluctuations in the detector, i.e., decreased accuracy. Furthermore, because there is an upper limit to the sealing pressure of the radiation source, reducing the size of the emission port may reduce the volume of the cavity containing the radioactive gas, preventing the introduction of a sufficient amount of radioactive gas, which also affects accuracy. Overcoming these technical difficulties has become a current technical challenge. Utility Model Content

[0004] This application provides a radiation source, the purpose of which is to solve one or more technical problems mentioned in the background art.

[0005] A radiation source includes: a housing, the housing having a cavity containing a radioactive gas, the cavity having an emission port, and an encapsulation film at the emission port for sealing the emission port; wherein the width of the emission port is B, the depth of the emission port is H, and the length of the emission port is L, and satisfies: 2mm≤H≤10mm, 7mm≤B≤20mm, 30mm≤L≤60mm, and 2105mm. 3 ≤L*B*H≤9800mm 3 , 0.7≤B / H≤10.

[0006] The proposed solution can both improve the resolution of the radiation source and ensure the accuracy of the radiation source. Attached Figure Description

[0007] Figure 1 This is a schematic diagram of the X-ray source from a certain angle in one embodiment;

[0008] Figure 2 This is a schematic diagram of the X-ray source from a certain angle in one embodiment;

[0009] Figure 3 for Figure 1 BB sectional view;

[0010] Figure 4 for Figure 2CC section view;

[0011] Figure 5 The results are simulation analysis of a radiation source with an emission aperture depth H of 1 mm.

[0012] Figure 6 The results are simulation analysis of a radiation source with an emission aperture depth H of 2 mm.

[0013] Figure 7 The results are simulation analysis of a radiation source with an emission aperture depth H of 3 mm.

[0014] Figure 8 The results are simulation analysis of a radiation source with an emission aperture depth H of 4 mm.

[0015] Figure 9 The results are simulation analysis of a radiation source with an emission port depth H of 5 mm.

[0016] Figure 10 The results are simulation analysis of a radiation source with an emission aperture depth H of 6 mm.

[0017] Figure 11 The results are simulation analysis of a radiation source with an emission port depth H of 7 mm.

[0018] Figure 12 The results are simulation analysis of a radiation source with an emission port depth H of 8 mm.

[0019] Figure 13 The results are simulation analysis of a radiation source with an emission aperture depth H of 9 mm.

[0020] Figure 14 The results are simulation analysis of a radiation source with an emission port depth H of 10 mm.

[0021] Explanation of reference numerals in the attached figures:

[0022] 10. Housing, 11. Cavity, 12. Emission port, 13. Encapsulation film. Detailed Implementation

[0023] The present invention will now be described in further detail with reference to specific embodiments and accompanying drawings. Similar elements in different embodiments are referred to by associated similar element reference numerals. In the following embodiments, many details are described to facilitate a better understanding of this application. However, those skilled in the art will readily recognize that some features may be omitted in different situations, or may be replaced by other elements, materials, or methods. In some cases, certain operations related to this application are not shown or described in the specification. This is to avoid obscuring the core parts of this application with excessive description. For those skilled in the art, detailed description of these related operations is not necessary; they can fully understand the related operations based on the description in the specification and general technical knowledge in the art.

[0024] Furthermore, the features, operations, or characteristics described in the specification can be combined in any suitable manner to form various embodiments. At the same time, the steps or actions in the method description can be rearranged or adjusted in a manner obvious to those skilled in the art. Therefore, the various orders in the specification and drawings are only for the clear description of a particular embodiment and do not imply a necessary order, unless otherwise stated that a particular order must be followed.

[0025] The serial numbers assigned to components in this document, such as "first" and "second," are used only to distinguish the described objects and have no sequential or technical meaning. The terms "connection" and "linkage" used in this application, unless otherwise specified, include both direct and indirect connections (linkages).

[0026] This application provides a radiation source, for reference... Figures 1-4 It includes: a shell 10, a cavity 11 inside the shell 10, a radioactive gas inside the cavity 11, a emission port 12 on the cavity 11, and a sealing film 13 at the emission port 12 for sealing the emission port 12; the width of the emission port 12 is B, the depth of the emission port 12 is H, and the length of the emission port 12 is L.

[0027] refer to Figure 5 The results are from a simulation analysis using Geant4 software of a source with a launch port depth H of 1 mm, a launch port width B of 1-20 mm, and a launch port length L of 30-60 mm. The boundary conditions are: internal pressure < 700 kPa and energy > 13,000,000. The simulation results show that none of the launch sources within the above ranges meet the boundary conditions.

[0028] refer to Figure 6This is a simulation analysis of a launch source with a launch port depth H of 2 mm, a launch port width B of 1-20 mm, and a launch port length L of 30-60 mm, performed using Geant4 software. The boundary conditions are: internal pressure < 700 kPa and energy > 13,000,000. According to the simulation results, under these conditions, the minimum width B is 19 mm, 9.5 ≤ B / H ≤ 10, and 2280 mm. 3 ≤L*B*H≤2400mm 3 .

[0029] refer to Figure 7 This is the result of a simulation analysis using Geant4 software on a source with a launch port depth H of 3mm, a launch port width B of 1-20mm, and a launch port length L of 30-60mm. The boundary conditions are: internal pressure <700kPa and energy >13,000,000. Under these conditions, the minimum width B is 13mm, 4.3≤B / H≤6.7, and 2223mm. 3 ≤L*B*H≤3600mm 3 .

[0030] refer to Figure 8 This data represents the simulation results of a launch source with a launch port depth H of 4 mm, a launch port width B of 1-20 mm, and a launch port length L of 30-60 mm, performed using Geant4 software. The boundary conditions are: internal pressure < 700 kPa and energy > 13,000,000. Under these conditions, the minimum width B is 10 mm, 2.5 ≤ B / H ≤ 5, and 2200 mm. 3 ≤L*B*H≤4720mm 3 .

[0031] refer to Figure 9 This data represents the simulation results of a launch source with a launch port depth H of 5 mm, a launch port width B of 1-20 mm, and a launch port length L of 30-60 mm, performed using Geant4 software. The boundary conditions are: internal pressure < 700 kPa and energy > 13,000,000. Under these conditions, the minimum width B is 9 mm, 1.8 ≤ B / H ≤ 4, and 2200 mm. 3 ≤L*B*H≤5800mm 3 .

[0032] refer to Figure 10This is the result of a simulation analysis using Geant4 software on a source with a launch port depth H of 6 mm, a launch port width B of 1-20 mm, and a launch port length L of 30-60 mm. The boundary conditions are: internal pressure < 700 kPa and energy > 13,000,000. Under these conditions, the minimum width B is 8 mm, 1.3 ≤ B / H ≤ 3.3, and 2208 mm. 3 ≤L*B*H≤6720mm 3 .

[0033] refer to Figure 11 This is the result of a simulation analysis using Geant4 software on a launch source with a launch port depth H of 7 mm, a launch port width B of 1-20 mm, and a launch port length L of 30-60 mm. The boundary conditions are: internal pressure < 700 kPa and energy > 13,000,000. Under these conditions, the minimum width B is 8 mm, 1.1 ≤ B / H ≤ 2.9, and 2240 mm. 3 ≤L*B*H≤7700mm 3 .

[0034] refer to Figure 12 This is the result of a simulation analysis using Geant4 software on a launch source with a launch port depth H of 8 mm, a launch port width B of 1-20 mm, and a launch port length L of 30-60 mm. The boundary conditions are: internal pressure < 700 kPa and energy > 13,000,000. Under these conditions, the minimum width B is 7 mm, 0.9 ≤ B / H ≤ 2.5, and 2184 mm. 3 ≤L*B*H≤8320mm 3 .

[0035] refer to Figure 13 This is the result of a simulation analysis using Geant4 software on a launch source with a launch port depth H of 9 mm, a launch port width B of 1-20 mm, and a launch port length L of 30-60 mm. The boundary conditions are: internal pressure < 700 kPa and energy > 13,000,000. Under these conditions, the minimum width B is 7 mm, 0.8 ≤ B / H ≤ 2.2, and 2105 mm. 3 ≤L*B*H≤9180mm 3 .

[0036] refer to Figure 14This data represents the simulation results of a launch source with a launch port depth H of 10 mm, a launch port width B of 1-20 mm, and a launch port length L of 30-60 mm, performed using Geant4 software. The boundary conditions are: internal pressure < 700 kPa and energy > 13,000,000. Under these conditions, the minimum width B is 7 mm, 0.7 ≤ B / H ≤ 2, and the maximum length is 2240 mm. 3 ≤L*B*H≤9800mm 3 .

[0037] In one embodiment, a radiation source is provided, with reference to... Figures 1-4 The device includes: a housing 10, a cavity 11 within the housing 10 containing radioactive gas, a emission port 12 on the cavity 11, and a sealing film 13 at the emission port 12 for sealing the emission port 12; the width of the emission port 12 is B, the depth of the emission port 12 is H, and the length of the emission port 12 is L. Wherein, 2mm≤H≤10mm, 7mm≤B≤20mm, 30mm≤L≤60mm, and 2105mm... 3 ≤L*B*H≤9800mm 3 , 0.7≤B / H≤10.

[0038] In one embodiment, a radiation source is provided, with reference to... Figures 1-4 The device includes: a housing 10, a cavity 11 within the housing 10 containing radioactive gas, a emission port 12 on the cavity 11, and a sealing film 13 at the emission port 12 for sealing the emission port 12; the width of the emission port 12 is B, the depth of the emission port 12 is H, and the length of the emission port 12 is L. Wherein, 3mm≤H≤9mm, 7mm≤B≤13mm, 30mm≤L≤60mm, and 2105mm... 3 ≤L*B*H≤9180mm 3 , 0.8≤B / H≤6.7.

[0039] In one embodiment, a radiation source is provided, with reference to... Figures 1-4 The device includes: a housing 10, a cavity 11 within the housing 10 containing radioactive gas, a emission port 12 on the cavity 11, and a sealing film 13 at the emission port 12 for sealing the emission port 12; the width of the emission port 12 is B, the depth of the emission port 12 is H, and the length of the emission port 12 is L. Wherein, 4mm≤H≤8mm, 7mm≤B≤10mm, 30mm≤L≤59mm, and 2184mm... 3 ≤L*B*H≤8320mm 3 , 0.9≤B / H≤5.

[0040] In one embodiment, a radiation source is provided, with reference to... Figures 1-4 The device includes: a housing 10, a cavity 11 within the housing 10 containing radioactive gas, a emission port 12 on the cavity 11, and a sealing film 13 at the emission port 12 for sealing the emission port 12; the width of the emission port 12 is B, the depth of the emission port 12 is H, and the length of the emission port 12 is L. Wherein, 5mm≤H≤7mm, 8mm≤B≤9mm, 30mm≤L≤58mm, and 2200mm... 3 ≤L*B*H≤7700mm 3 , 1.1≤B / H≤4.

[0041] The above examples illustrate the invention and are intended only to aid understanding, not to limit its scope. Those skilled in the art can make various simple deductions, modifications, or substitutions based on the ideas presented in this invention.

Claims

1. A radiation source, characterized in that, include: The housing has a cavity containing a radioactive gas. The cavity has a emission port, and a sealing membrane is provided at the emission port to seal it. The emission port has a width of B, a depth of H, and a length of L, satisfying the following conditions: 2mm ≤ H ≤ 10mm, 7mm ≤ B ≤ 20mm, 30mm ≤ L ≤ 60mm, and 2105mm. 3 ≤L*B*H≤9800mm 3 , 0.7≤B / H≤10.

2. The radiation source as described in claim 1, characterized in that, 3mm≤H≤9mm, 7mm≤B≤13mm.

3. The radiation source as described in claim 2, characterized in that, 2105mm 3 ≤L*B*H≤9180mm 3 。 4. The radiation source as described in claim 3, characterized in that, 0.8≤B / H≤6.

7.

5. The radiation source as described in claim 4, characterized in that, 4mm≤H≤8mm, 7mm≤B≤10mm, 30mm≤L≤59mm.

6. The radiation source as described in claim 5, characterized in that, 2184mm 3 ≤L*B*H≤8320mm 3 。 7. The radiation source as described in claim 6, characterized in that, 0.9≤B / H≤5.

8. The radiation source as described in claim 7, characterized in that, 5mm≤H≤7mm, 8mm≤B≤9mm, 30mm≤L≤58mm.

9. The radiation source as described in claim 8, characterized in that, 2200mm 3 ≤L*B*H≤7700mm 3 。 10. The radiation source as described in claim 9, characterized in that, 1.1≤B / H≤4.

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