34 results about "High energy particle" patented technology

The invention relates to the technical field of isotope production, in particular to a welding-free target capsule for isotope production and a manufacturing method of the welding-free target capsule. The welding-free target capsule comprises a target material used for generating isotopes under bombardment of high-energy particles; the first metal film covers one side of the target material; the second metal film covers the other side of the target material; wherein the first metal film and the second metal film are made of materials with ductility; the edge of the first metal film and the edge of the second metal film are attached to each other on the peripheral side of the target material and are folded into an annular sealing structure. In the invention, the metal film with good ductility is used as a coating material of the target material, and the sealing structure is formed by folding the connecting part of the metal film, so that the target capsule can be ensured to efficiently dissipate heat in a water-cooling environment, the manufacturing mode of the sealing structure can be improved, the manufacturing steps of the sealing structure are simple and easy to implement, and the manufacturing cost of the target capsule is further reduced.

The invention relates to a separation method suitable for At-211 produced by a linear accelerator, which comprises the following steps: performing gradient pressing on bismuth powder and a pore forming agent, and sintering on a porous silicon carbide substrate to form a gradient pore bismuth-silicon carbide composite target material; bombarding the gradient pore bismuth-silicon carbide composite target material through a high-energy particle beam generated by a linear accelerator, and carrying out nuclear reaction on bismuth atoms in the target material to generate At-211; the bombarded target material is pretreated through argon plasma; distilling the pretreated target material under pulse carrier gas to realize volatilization separation of At-211, wherein the carrier gas comprises inert gas, reducing gas and organic acid steam; the distilled gas is subjected to gradient condensation through the micro-channel condenser; and adding an extracting agent into the micro-channel condenser, and dissolving the At-211 in the extracting agent to obtain an At-211 solution. The high-flux separation method of At-211 suitable for linear accelerator production, provided by the invention, is stable, efficient and rapid.

The embodiment of the specification provides a multi-source high-energy particle detection data fusion method and device, wherein the multi-source high-energy particle detection data fusion method comprises the following steps: obtaining initial detection data, performing geomagnetic coordinate conversion based on the initial detection data to determine a coordinate conversion result; determining a baseline model based on the coordinate conversion result, determining a fluctuation model based on the baseline model; establishing a data calibration model based on the baseline model and the fluctuation model; determining calibration data based on the data calibration model, determining a calibration coefficient based on the calibration data; performing data conversion based on the calibration coefficient and the data calibration model to determine fusion data. By increasing the calibration of fluctuation data at the data calibration level, the fluctuation detection data can be retained in the data fusion aspect, and the method has a wider application scenario.

The present application relates to the technical field of isotope production equipment, and particularly relates to a target capsule facilitating replacement of target material and a target material replacement method. The target capsule comprises: a first shell provided with a first recess, the opening of the first recess being located at the first end face of the first shell; a second shell provided with a second recess, the opening of the second recess being located at the first end face of the second shell; and a target material for receiving bombardment of high-energy particles to generate isotopes; wherein the first shell is embedded in the second recess and is threadedly connected with the second shell, the target material is installed in the first recess, and the bottom wall of the second recess covers the opening of the first recess. In the present application, the sealing structure of the target capsule is optimized to be the first shell and the second shell connected through a threaded structure, so that workers can conveniently assemble, disassemble and replace the target material of the target capsule, the sealing structure can be repeatedly used, and the production efficiency of isotopes is improved.

This disclosure provides plasma processing equipment and methods, control devices, and storage media. The equipment includes: a cavity, a support device, a filter device, a gas inlet device, and a plasma excitation device. The filter device includes a first ion filter unit and a second ion filter unit. The gas inlet device includes an auxiliary gas input component connected to the plasma generation region and a reactive gas input component connected to the plasma indirect excitation region. The plasma excitation device excites the auxiliary gas entering the plasma generation region to form plasma. The first ion filter unit filters out ions and electrons from the plasma. The remaining excited-state atoms of the auxiliary gas are used to excite the reactive gas in the plasma indirect excitation region to form excited-state atoms of the reactive gas. The second ion filter unit filters the excited-state atoms of the reactive gas and allows them to enter the reaction region, thereby reducing the energy and density of high-energy particles and minimizing damage to the wafer substrate.

The invention discloses an aluminum-copper alloy surface coating method, which belongs to the technical field of aluminum-copper alloy coating, and comprises the following steps: pretreating a workpiece, wiping the surface of the aluminum-copper alloy workpiece by using an organic solvent, removing greasy dirt, grease and other organic pollutants, and removing a surface oxide layer by adopting a chemical pickling method, so that surface atoms are more active, and the deposition of a film is facilitated. A plasma treatment technology is adopted, plasmas are generated in a low-pressure gas environment, high-energy particles in the plasmas are used for bombarding the surface of a workpiece and activating atoms on the surface, proper reaction gas and inert gas are selected according to a thin film material to be deposited, and the gas flow is mainly stabilized in the reaction process. The aluminum alloy part is pretreated, oil stains, impurities and a natural oxidation film on the surface of the aluminum alloy are removed through combined use of a weak alkaline solution and a strong alkaline solution, so that the subsequent oxidation process is more stable, the cleanliness of the workpiece is improved, and deposition of the film is facilitated.

The application discloses a plasma module, a plasma assembly, an air purification assembly and an air conditioner. The plasma module comprises a mounting seat, a magnet, an outer electrode and an inner electrode, an air purification channel is formed between the inner electrode and the outer electrode, when there is a potential difference between the inner electrode and the outer electrode, an electric arc is generated at the annular sharp end of the outer surface of the inner electrode. When the air flows in the air purification channel, due to the increasing trend of the radial gap of the air purification channel from the sharp end to the air outlet, the airflow generates a pull arc, the plasma module ionizes the air to generate a plurality of active free radical groups with strong oxidizing property and high-energy particles, so that the effects of degrading VOC, sterilizing and killing viruses are achieved, the magnetic field is increased by the magnet, the movement track of the charged particles is constrained, the reaction time of the charged particles and the pollutants is increased, the ionization effect and the air purification efficiency are improved. And the sliding arc discharge mode is adopted, and the temperature generated by the plasma module itself can degrade ozone.

The utility model provides automation equipment for testing light output of a scintillator. The automation equipment comprises a shielding box body. The shielding box body is a hollow box body, the top of the shielding box body is provided with an exit port, the shielding box body is internally provided with a lifting frame, the lifting frame is arranged at the bottom of the shielding box body, the upper side of the lifting frame is provided with a detector, and a scintillator to be detected is arranged on the top surface of the detector. And a high-energy particle generator is arranged on the upper side of the shielding box body and emits high-energy particles to the to-be-detected scintillator in the shielding box body from the exit port. The device can adapt to the evaluation of scintillators with different shapes and sizes, improves the adaptability of the device, and meets the diversified test requirements.

The present invention provides a low-temperature plasma joint cavity puncture jet device. It utilizes a parallel plate structure discharge device to generate atmospheric pressure plasma. The discharge region is located in the electrode gap, which is typically small, ranging from millimeters to centimeters. The thickness and volume of the treated object are limited by the discharge gap. When the treated object is placed in the discharge gap, it acts like adding a dielectric layer between the electrodes, potentially affecting the discharge characteristics. The plasma jet does not generate plasma within the gap, but rather utilizes airflow and electric fields to transport high-energy particles and active ingredients from the discharge region to the sample surface. The device is simple and easy to disassemble, produces a plasma jet with a high number of active particles, and is safe to use, facilitating its application.

The present application relates to a kind of based on graph neural network's neutron scattering experimental sample temperature field monitoring method, comprising the following steps: step one, research the attenuation law of high-energy particle environment to sample surface radiation energy, step two, construct the hyperspectral imaging model of sample surface radiation, step three, using multispectral radiation thermometry theory, complete the numerical reconstruction of sample surface temperature field under high-energy particle environment;Step four, combined with hyperspectral numerical image data, construct the surface temperature field measurement proxy model based on graph neural network;The purpose of the present application is to provide a kind of based on graph neural network proxy model's neutron scattering experimental sample surface temperature field monitoring method, realize the accurate measurement of sample surface temperature field under high-energy particle environment.

The invention discloses a method for analyzing long-term response of ozone in the Antarctic stratosphere to high-energy particle sedimentation, which comprises the following specific steps: firstly, acquiring vertical distribution characteristics of ozone from the Antarctic stratosphere to the middle layer from January to December in 30 years, and drawing a historical vertical distribution diagram; compiling a special method technical scheme for analyzing the long-term response of the ozone in the Antarctic stratosphere to the sedimentation of the high-energy particles, and carrying out technical disclosure to workers; then, the geomagnetic index is adopted as an agent index of high-energy particle sedimentation, a unary linear regression model of the southern hemisphere winter atmospheric variable is established, and the regression model is shown in the specification. The process that high-energy particles are settled and generated and conveyed to the stratosphere through polar region vortex and the ozone loss chemical process of the high-energy particles can be quantitatively analyzed, and the potential influence of extreme space weather events on an earth climate system can be conveniently evaluated.

The invention provides a heat dissipation device for a single event effect test, and the device comprises a bearing plate which is used for bearing a to-be-tested device, the back surface of the to-be-tested device is attached to the bearing plate, the test surface of the to-be-tested device is opposite to a high-energy particle beam, and the back surface and the test surface are two opposite surfaces of the to-be-tested device; the water cooling head is attached to the other side, opposite to the tested device, of the bearing plate and used for cooling the tested device; the fixing plate is used for fixing the bearing plate and the water cooling head, and the water cooling head is arranged between the fixing plate and the bearing plate; and the elastic pressing device is connected with the bearing plate, the fixing plate and the water cooling head, applies pressure towards the direction of the water cooling head to the bearing plate, and applies elastic force towards the direction of the bearing plate to the water cooling head. The invention further provides a test system and a test method.

The present application relates to the technical field of isotope production, and particularly relates to a welding-free target capsule for isotope production and a manufacturing method thereof. The welding-free target capsule comprises: a target material for generating isotopes under high-energy particle bombardment; a first metal film covering one side of the target material; and a second metal film covering the other side of the target material; wherein the first metal film and the second metal film are made of a material with ductility; and the edges of the first metal film and the edges of the second metal film are attached to the outer circumferential side of the target material and folded into a ring-shaped sealing structure. In the present application, the metal film with good ductility is used as the cladding material of the target material, and the sealing structure is formed by folding the connecting part of the metal film, which can not only ensure efficient heat dissipation of the target capsule in a water-cooled environment, but also improve the manufacturing method of the sealing structure, so that the manufacturing steps of the sealing structure are simple and easy to implement, thereby reducing the manufacturing cost of the target capsule.

The invention discloses a method and system for optimizing two-dimensional argon plasma uniformity by introducing a high-energy particle source, and the method comprises the steps: S1, filling a plasma reaction chamber with background gas, and simulating the distribution of neutral particles; s2, initializing the speed and the position of charged particles in the gas in the chamber, enabling the charged particles to be uniformly distributed in the chamber, and determining the intensity, the time sequence, the incident direction and the incident position of high-energy particles emitted by an external particle source; s3, calculation of charged particle density, potential and electric field; s4, calculating the force acting on the charged particles; s5, moving the charged particles; s6, checking and executing collision; and S7, repeating the steps S3 to S6, adjusting the high-energy particle injection time sequence until a steady state is reached, and obtaining the data distribution of the charged particles. Through controllable interaction between an external particle source and plasma or background gas, seed electrons-ions are actively generated in a specific space area or energy distribution is changed, and inherent space non-uniformity of the plasma is compensated.

The application relates to the technical field of short-wave communication, and discloses a method for evaluating propagation loss of a high-energy particle additional ionization area, comprising the following steps: constructing an ionosphere propagation environment; wherein the ionosphere propagation environment comprises a neutral gas environment and an ion environment, and a high-energy particle additional ionization area reflection structure; tracking rays passing through the high-energy particle additional ionization area reflection structure, and constructing a propagation path simulation model; and determining propagation loss and total attenuation of high-energy particle propagation according to the propagation path simulation model. The technical effects of the method are described. The method can realize evaluation and analysis of the propagation loss of the high-energy particle additional ionization area, and improve the accuracy of the calculation of the propagation loss of the high-energy particle additional ionization area. The application further discloses a device for evaluating the propagation loss of the high-energy particle additional ionization area, a detection equipment and a storage medium.

To uniformly induce nuclear reactions on the surface of a hydrogen-containing metal in room-temperature nuclear fusion.SOLUTION: In a case where the excitation time 1 / (F×A×V) is estimated when F is the flux density of high-energy excitation source particles such as cosmic rays, A is the capture coefficient of the hydrogen-containing metal for the excitation source particles, and V is the volume of crystal grains constituting the hydrogen-containing metal, the excitation time becomes more than one million years under present background neutron conditions on Earth for typical current grain sizes. Thus, only an extremely small portion of the entire material can undergo nuclear reactions, revealing the need for a fundamental solution. The most effective method is single crystallization or large-grain polycrystallization, which significantly improves the excitation time. Dramatic improvement is also achievable by artificially supplying high-energy particles to the hydrogen-containing metal using LC resonance type accelerators or the like.SELECTED DRAWING: Figure 9

The present application relates to the technical field of isotope production equipment, and particularly relates to a target capsule convenient to package and a packaging method thereof. The target capsule comprises: a support frame arranged in an annular structure with a through hole in the middle; a target material installed in the through hole, used for receiving bombardment of high-energy particles to generate isotopes; a first shell covered on one side of the support frame; and a second shell covered on the other side of the support frame; wherein a groove extending along the circumferential direction is arranged on the outer peripheral wall of the support frame, and the side wall of the first shell and the side wall of the second shell both extend to the groove opening of the groove and are welded to each other. In the present application, the groove is arranged on the outer peripheral wall of the support frame, and the first shell and the second shell are welded at the groove, so that welding between different materials can be avoided, and the welding position is transferred from the end face to the outer peripheral face, the probability of brittle failure of the welding seam is reduced, and the reliability of the target capsule is greatly improved.

The present application relates to the technical field of isotope production equipment, and particularly relates to a target capsule for isotope production and a manufacturing method thereof. The target capsule comprises a support frame, the middle part of the support frame is provided with a through hole; a target material is installed in the through hole, and is used for receiving bombardment of high-energy particles to generate isotopes; and an encapsulating shell is wrapped outside the support frame; wherein the support frame comprises a first support ring with the through hole as a ring hole, and a second support ring sleeved outside the first support ring. In the present application, the support frame is provided as two parts of the first support ring and the second support ring, so that when the target capsule is disassembled in a punching manner, the encapsulating shell can be easily cut off along the contact surface of the first support ring and the second support ring, the punching force applied on the target capsule can be greatly reduced, and the disassembling position is far away from the target material, so that the target material is prevented from being broken and the generation of radioactive dust is reduced.

The invention discloses a cathode modification preparation method of an anode-supported solid oxide fuel cell, which comprises the following steps of: treating by adopting inductively coupled plasma, surrounding an induction coil on the periphery of an alundum tube of a furnace by a circle to form an alternating magnetic field, and introducing argon or other gases, so that electrons in the gases are accelerated to collide with gas atoms to form a modified cathode of the anode-supported solid oxide fuel cell. And high-energy particles of the plasma bombard the surface of the material, so that oxygen vacancies are formed on the surface of the cathode of the battery, active sites on the surface of the cathode material can be increased, oxygen can be adsorbed and converted more easily, and the electrochemical reaction rate is increased. According to the invention, the polarization resistance of the battery is effectively reduced, and the power density and the CO2 electrolysis performance of the battery are effectively improved. According to the invention, the cathode material is a PrBa < 0.5 > Sr < 0.5 > Co < 1.5 > Fe < 0.5 > O < 6-delta > double perovskite material, and compared with other perovskite materials, the material has good chemical stability.

Boronated prodrugs have been developed that are particularly advantageous for use in boron proton capture therapy (BPCT) and boron neutron capture therapy (BNCT). Cancer-targeting moieties, such as heptamethine cyanine dyes (HMCDs), are linked to compounds including a plurality of boron isotopes, e.g., carboranes such as 1-amino-1-carbadodecaborate. Compounds of the present disclosure were demonstrated to deliver eleven boron-11 atoms per dye molecule selectively to breast cancer cells. Upon irradiation with proton or neutron beams and subsequent nuclear fusion reaction by proton capture, unstable 12C is generated in place of 11B, which is short lived and releases high energy alpha particles. There particles travel only a short distance within cell and / or a very close tumor microenvironment, damaging cellular DNA ultimately resulting in killing cancer cells, and are particularly useful with young patients and with deep tissue tumors located in critical organs which are difficult to remove by surgery.

The present invention discloses an apparatus and method for plasma polymerization of ultra-high-purity, ultra-high molecular weight polyethylene. The apparatus includes a plasma reaction chamber, a plasma high-energy excitation source, a gas supply system, a vacuum control system, a temperature control system, a product collection system, and a gas circulation system. The plasma coil in the plasma high-energy excitation source is enclosed in the outer ring of the bell-shaped jar of the plasma reaction chamber, providing energy to the plasma reaction chamber and exciting the inner wall of the chamber to generate high-activity, high-energy density plasma. The present invention generates high-activity, high-energy density plasma through high-energy excitation. Ethylene monomer molecules are impacted by high-energy particles in the plasma to form active species, which react with other ethylene monomers or active species. Free radical polymerization forms polyethylene chains, achieving polymerization of ethylene monomers, thereby generating ultra-high molecular weight polyethylene materials in the absence of catalysts. Ultra-high purity polyethylene products can be obtained through precise control of temperature and pressure.

The invention relates to the technical field of isotope production equipment, in particular to a target capsule convenient to disassemble and a disassembling method thereof. The target capsule comprises a supporting frame which is of an annular structure with a through opening in the middle; the packaging shell covers the outer side of the supporting frame; the target material is mounted in a cavity defined by the through hole and the packaging shell and is used for receiving bombardment of high-energy particles to generate isotopes; wherein the supporting frame is provided with a first groove, and the first groove is located in the side wall, attached to the packaging shell, in the supporting frame and used for assisting in cutting the packaging shell. According to the device, the first groove is formed in the supporting frame, so that the shell wall, corresponding to the notch of the first groove, in the packaging shell is in a suspended state, shearing force can be generated on the shell wall of the packaging shell as long as the packaging shell is jacked and pressed from the outer side through the V-shaped hob, and therefore the packaging shell is easily cut and separated, the disassembling difficulty of the target capsule can be reduced, and the disassembling efficiency of the target capsule can be improved. And the damage to the target material can be avoided.

The application relates to the technical field of fusion devices, and discloses a divertor and a cutting and welding method of a cooling pipeline of the divertor. The divertor comprises a box body and a plasma-facing component supported on the box body. The plasma-facing component comprises an inner target plate, an outer target plate and a dome which are connected. The inside of the box body is located below the dome and is provided with a first cooling pipeline and a second cooling pipeline which are connected in communication. The second cooling pipeline is perpendicular to the dome. The first pipeline is used for cooling the inner target plate and the outer target plate. The second cooling pipeline is used for connecting a coolant and cooling the dome. According to the application, the cooling pipelines of the inner target plate, the dome and the outer target plate are arranged in the box body which is relatively weak and is bombarded by high-energy particles at the lower part of the dome. The cooling pipelines are horizontally connected with the inner and outer target plates and are vertically connected with the dome. The pipelines are centrally arranged, so that cutting and welding are facilitated. Meanwhile, enough space is provided for maintenance tools to operate. The pipelines are rationally arranged and are convenient to operate.

The present invention discloses a solid cooling target device for a cyclotron accelerator, comprising: a solid target base; a target substrate, mounted inside the solid target base and sealingly separating the upper and lower ends of the solid target base, wherein the upper surface forms a target material bearing surface and the lower surface forms a cooling surface; a cooling base, wherein the upper end of the cooling base is sealedly connected to the lower end of the solid target base, and the cooling base is formed with a liquid feed channel and a liquid return channel connected to an inner cavity; a jet nozzle, mounted inside the cooling base, wherein the inlet end of the jet nozzle is connected to the liquid feed channel, the outlet end of the jet nozzle is located below the target substrate, and a cooling liquid annulus is formed between the jet nozzle and the cooling base for supplying cooling liquid, wherein the cooling liquid annulus is connected to the liquid return channel. The present invention can effectively cope with the heat generated when high-energy particles interact with target materials, achieve efficient cooling of the target, improve the yield of radioactive nuclides, and ensure the safety and stability of equipment operation.

A method of synthesis of energetic particles, and associated systems, the method including providing a metal powder, dispersing the metal powder in a first fluid to form a first suspension, contacting the first suspension with an oxide precursor, aqueous ammonium hydroxide and a second fluid, to produce a first product, collecting product solids and inductively heating product solids to produce energetic core-shell particles.

The invention relates to the technical field of isotope production equipment, in particular to a target capsule for isotope production and a manufacturing method of the target capsule. The target capsule comprises a support frame, wherein a through hole is formed in the middle of the support frame; the target material is mounted in the through hole and is used for receiving bombardment of high-energy particles to generate isotopes; the packaging shell covers the outer side of the supporting frame; the supporting frame comprises a first supporting ring with the through opening as an annular hole and a second supporting ring connected to the outer side of the first supporting ring in a sleeving mode. In the invention, the support frame is divided into two parts, namely the first support ring and the second support ring, so that when the target capsule is disassembled in a stamping manner, the packaging shell can be easily cut off along the contact surface of the first support ring and the second support ring, the stamping force applied to the target capsule can be greatly reduced, and the forcible entry position can be far away from the target material; therefore, the target material is prevented from being broken, and radioactive dust is reduced.

The application discloses a voltage-controlled oscillator applied to an anti-radiation phase-locked loop, comprising a three-stage delay unit and a waveform shaping circuit. When a sensitive node of the delay unit is bombarded by high-energy particles, a single event transient current is generated at the node, which changes the phase and frequency of the VCO. The three-stage delay unit utilizes a positive feedback loop formed by an inverting cross circuit, and based on the SET effect transient current characteristics, accelerates the recovery process of the delay circuit to the SET effect, thereby having certain anti-SET capability. In addition, the application does not introduce a bias node sensitive to SET, although the tail current source drain node still exists, but the SET effect generated at the node is consumed by the delay unit, so the circuit is not sensitive to SET. The application effectively alleviates the irradiation influence on the voltage-controlled oscillator in the phase-locked loop, and has strong anti-single particle bombardment capability, and has little influence on the normal working state of the phase-locked loop.

The invention discloses a battery and a method for enhancing a beta radiation volt effect based on surface plasmas. The battery comprises a nuclear battery negative electrode, an electrolyte and a nuclear battery positive electrode, the nuclear battery negative electrode comprises FTO conductive glass, a semiconductor layer arranged on one side of the FTO conductive glass, and a metal film layer arranged on one side of the semiconductor layer, the anode of the nuclear battery is a metal PT platinum sheet, on one hand, gold (Au) has the property of nanoparticles due to the surface porosity of the metal PT platinum sheet, a larger contact area is provided for electrode reaction, and meanwhile, generation and separation of carriers can be enhanced and recombination of radiation-generated carriers can be reduced by generating surface plasmas; various free radicals with oxidation-reduction property can be generated to provide more reaction substrates for electrode reaction, so that the battery performance is further improved, and high-energy beta particles generated by decay of 90Sr (OH) 2 (strontium-90 hydroxide) firstly react with a solution to generate the free radicals.

The invention relates to a DDR4SDRAM fixed bit error test method and device based on high-energy particles, and the method comprises the steps: S1, obtaining a DDR4SDRAM sample device, and selecting a target radiation source and radiation energy; s2, irradiating the sample device from the initial particle fluence according to the target radiation source and the irradiation energy; s3, judging whether the irradiated sample device has a fixed position error or not, if the fixed position error does not occur, increasing the particle fluence according to the initial particle fluence to irradiate the sample device, repeating S3, and if the fixed position error occurs, recording the particle fluence reaching a damage threshold value and determining the number of the fixed position errors; and S4, carrying out annealing curve measurement on the sample device, obtaining an annealing curve according to the particle fluence reaching the damage threshold, and determining an optimal device according to the damage threshold and the annealing curve. According to the method, the fixed bit error of the DDR4SDRAM can be effectively evaluated.

The invention belongs to the field of magnetic confinement controlled nuclear fusion, and discloses a numerical calculation method and system for phase space distribution function evolution of helium ions in magnetic confinement deuterium-tritium fusion, and the method comprises the steps: carrying out the numerical stability verification based on a self-adaptive CFL condition, and determining a proper step size value, carrying out discretization processing on the input data by utilizing a multi-dimensional grid; establishing a Fokker-Planck equation containing friction, energy diffusion, position space transport and helium ion generation source items, and converting the Fokker-Planck equation into a difference format capable of being solved in a recursive manner through a finite difference method; in the calculation process, a corresponding boundary condition is set in combination with physical reality, a difference format of a boundary area is corrected, self-consistent updating is carried out on the main ion density based on a quasi-neutral condition, and information of evolution of a helium ion phase space distribution function along with time is obtained; and introducing an energy boundary judgment method related to the equivalent temperature of helium ash, distinguishing the helium ash from high-energy particles, and outputting a result of evolution of density profiles of the helium ash and the high-energy particles along with time.