67 results about "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 provides a neutral atom beam generation device and a neutral atom detector calibration device. The neutral atom beam generation device comprises an ion beam generation device used for emitting a mixed beam; the particle energy testing device comprises an incident end, a first emergent end, a second emergent end and an acquisition device, the incident end is used for receiving the mixed beam; the incident end is communicated with the second emergent end through an arc-shaped channel, and a deflection magnetic field is arranged at the arc-shaped channel, so that positive ions in the mixed beam flow deflect and bombard the acquisition device; the acquisition device is used for acquiring a first bombardment position of positive ions; the first emergent end is used for emitting a first ion beam; the processing device is connected with the collecting device and used for determining the deflection radius of the positive ions according to the first bombardment position and determining the energy of the positive ions and the neutral atoms according to the deflection radius; and the particle screening device is used for absorbing positive ions and negative ions in the first ion beam so as to emit a neutral atom beam.

The invention discloses a lunar dust protection system for a low-energy particle detector. The lunar dust protection system comprises a protective cover, a nitrogen blowing opening, a pressing device, an unfolding device, a power supply subsystem and a control subsystem, wherein the protective cover and the nitrogen blowing opening are integrally designed; the protective cover covers the head of the sensor and is consistent with the head of the sensor in shape; the nitrogen blowing port blows nitrogen into the sensor in a ground test stage to prevent pollution; the blocking cap is used for blocking before the satellite is launched to prevent dust pollution; when the system is in a protection state, the pressing device presses the protective cover and the head of the sensor, and the protective cover is released through thermal cutting according to an instruction of the control subsystem; the unfolding device is matched with the pressing device to achieve unfolding of the protective cover, and the protective cover is locked after being released to a designated position. The power supply subsystem supplies power to the pressing device according to an instruction of the control subsystem; the control subsystem periodically collects state monitoring parameters and transmits the state monitoring parameters to the load management unit, controls power-on and power-off of the pressing device according to a ground remote control instruction, and executes unfolding operation of the system.

The invention discloses a tritiated water measurement method, device, equipment, medium and product, and relates to the field of radiation detection, the method comprises the following steps: obtaining an actual nuclear pulse signal detected by a double-layer scintillator detector, and carrying out classification by using a trained convolutional neural network according to the actual nuclear pulse signal to obtain an actual energy deposition mode type; the actual energy deposition mode types include that the particles do not deposit energy in the scintillators, the particles only deposit energy in the second layer of scintillators, the particles only deposit energy in the first layer of scintillators and the particles have energy deposition in the two layers of scintillators, and the tritium beta rays are determined according to the actual energy deposition mode types. According to the invention, accurate measurement of tritium water can be realized.

The invention discloses a target detection network radiation hardening method for a space spacecraft AI chip, and belongs to the technical field of neural network radiation resistance. The method comprises the following steps: acquiring a target detection network model; a Dropout enhancement model and an exponential bit quantization optimization model are adopted respectively; and carrying out target detection in a space environment by adopting the optimized model. According to the method, the robustness of the neural network in the space radiation environment can be remarkably improved, the reasoning precision and speed of the model can be kept, the problem of reliable operation of the deep learning model in the space environment is solved, and the stability and task success rate of a spacecraft intelligent system are optimized. Aiming at the problem of single event upset caused by high-energy particle radiation in a space environment, the invention provides a training-reasoning collaborative optimization strategy, and provides reliable guarantee for AI application on a spacecraft.

Methods and systems are disclosed that enhance the yield and speed of emission and control the spectral and angular emission of light emitted by materials under irradiation by high-energy particles through a process known as scintillation. In each case, a photonic structure (of nano- or micron-scale feature sizes) is integrated with a scintillating material, and the photonic structure enhances the yield or controls the spectrum of the material. Various embodiments of this technology and practical demonstrations are disclosed.

The invention relates to a data migration method for wafer storage unit physical damage caused by high-energy particles, which belongs to the technical field of data processing, and comprises the following steps: monitoring a storage unit in real time to judge whether wafer physical damage caused by high-energy particle impact exists or not; if the physical damage exists, determining a damage radiation area by taking a damage point as a center; data, meeting a preset migration condition, in the damaged radiation area serves as data to be migrated, the data to be migrated are migrated to a safe area of the storage unit, and the safe area at least meets the condition that the safe area is not overlapped with any damaged radiation area determined before the current time. The method has the advantage that the active data preservation effect on the damaged data is realized aiming at the physical damage of the wafer storage unit caused by the high-energy particles.

This invention relates to the field of power semiconductor technology, specifically to an IGBT device resistant to single-event radiation and its fabrication method. By setting a P-type buried layer region at the bottom of the second trench, the strong electric field at the bottom of the trench is effectively weakened. Simultaneously, the P-type buried layer provides additional hole pathways, accelerating the extraction process of transient electron-hole pairs generated after high-energy particle incident, thereby effectively reducing the risk of single-event burn-out and improving the reliability of the device under irradiation. Furthermore, by introducing an N-type buried layer region at the bottom of the first trench, the electron injection effect is enhanced, increasing the carrier concentration in the on-state and reducing the on-state voltage drop. This structure also helps suppress the accumulation of holes below the gate during single-event incident, weakening the transient high electric field below the gate and improving the device's single-event tolerance. By reducing the depth of the first trench, the gate capacitance of the device can be effectively reduced, increasing the switching speed and reducing switching losses. In summary, this invention maintains radiation resistance while also ensuring high-frequency electrical performance.

The invention discloses a 10 MeV-level high-brightness ultrafast electron beam source based on quasi-linear laser wake field acceleration and a generation device thereof. Miniaturized repetition frequency ten-megawatt-level femtosecond laser interacts with a gas target capable of generating special gas flow distribution; based on a new quasi-linear laser wake field electron acceleration mechanism, the generation of a 10 MeV-level high-brightness high-performance ultrafast electron beam source can be accelerated. The device effectively solves the problem that it is difficult to accelerate generation of ultrafast electron beams with low energy dispersion, low emittance, high flow intensity, femtosecond pulse width, high brightness and high performance in a sub-ten-megawatt femtosecond laser driving wake field. Therefore, the method is expected to be widely applied to advanced fields such as ultrafast electron diffraction imaging and pumping detection, laser wake field and plasma diagnosis and measurement, high-energy particle acceleration, novel ultrafast coherent radiation source generation and the like.

The invention discloses a high-load transparent rare earth complex organic glass scintillator as well as a preparation method and application thereof. The scintillator comprises a polymer matrix and an ionic rare earth complex dispersed in the polymer matrix, the rare earth complex comprises coordination anions and ionic liquid cations, the coordination anions comprise rare earth ions and organic ligands, and the loading capacity of the rare earth complex in the polymer matrix can reach 80-90 wt%. According to the scintillator, an ionic liquid is introduced to construct an ionic supramolecular structure, effective isolation of a luminescence center is realized by utilizing steric hindrance and a charge shielding effect, concentration quenching is inhibited, and compatibility with a matrix is enhanced, so that the material still keeps transparency of 90% or above under an ultrahigh load. The maximum radiation luminous intensity of the scintillator is 23.9 times that of commercial LYSO, the lower detection limit is as low as 56nGy / s, and the scintillator is suitable for the fields of high-energy particle detection, X-ray imaging and the like.

The invention provides a neodymium-iron-boron magnet, a preparation method thereof, a high-radiation-resistance bonded neodymium-iron-boron magnet and application. The neodymium-iron-boron magnet is of a core-shell structure. The core-shell structure comprises an inner core, an inner shielding layer and an outer protection layer, wherein the inner shielding layer and the outer protection layer sequentially cover the surface of the inner core. Wherein the inner core comprises a neodymium iron boron magnetic material, the inner shielding layer comprises gadolinium oxide, and the outer protection layer comprises boride. According to the method, efficient cascade shielding of high-energy particles such as neutrons and gamma rays is formed through the nuclear physical shielding principle (the neutron capture effect of the gadolinium element and the gamma ray scattering function of boron nitride), the radiation resistance of the magnet is greatly improved, and the prepared neodymium-iron-boron magnet has the advantages of light weight and low-temperature forming; and the synergistic improvement of high radiation resistance and excellent magnetic performance can be met at the same time. The high-radiation-resistance bonded neodymium-iron-boron magnet prepared based on the neodymium-iron-boron magnet can keep stable magnetic performance in an extreme environment with an accumulated radiation dose of more than 1MGy.

The application provides a spatial high-energy particle detection array film which can be greatly stretched and attached to a complex curved surface and belongs to the technical field of detection. A peripheral support frame is arranged on a flexible base and is used for mounting, limiting, pre-tensioning or fixing with a target curved surface; a middle part is a deformable working area, a plurality of detection unit rigid islands are arranged in the working area; electrical connection is realized through liquid metal bridging wires between adjacent detection unit rigid islands; an upper packaging layer, a lower packaging layer and an edge flexible lead-out interface are arranged outside. The application realizes the combination of "high-performance detection unit" and "overall large deformation attachment ability" by limiting the detection function in the local rigid island and mainly distributing the structural deformation to the liquid metal bridging area.

The application discloses a satellite orbit space environment disturbance coping method, equipment and computer program product. The method comprises the following steps: acquiring current position data and current space environment data of a target orbit, wherein the current space environment data comprises a first high-energy particle integrated flux at a target position of a high-energy particle flux and a first high-altitude atmospheric daily average atmospheric density; querying a second high-energy particle integrated flux at the target position of the high-energy particle flux and a second high-altitude atmospheric daily average atmospheric density when the target orbit environment is calm according to the current position data; calculating a high-energy particle radiation environment relative disturbance amount and a high-altitude atmospheric density maximum relative disturbance amount of the target orbit; determining a current high-energy particle radiation environment disturbance degree and a current atmospheric environment disturbance degree in combination with a disturbance degree discrimination range; and generating a risk coping suggestion. The application can accurately understand the disturbance situation of a spacecraft operating environment and improve the safety of the spacecraft in-orbit operation.

This disclosure provides a method, apparatus, electronic device, and medium for reconstructing the dose distribution of a particle irradiation target area. The method includes: monitoring the irradiation information of particles on a monitoring plane along the incident path, including beam spot position, beam spot size, and dose corresponding to each position, wherein the particles include particles of various energies; calculating the dose of particles of different energies at different depth planes in the target area based on the particle dose ratio of particles of different energies at different depth planes in the target area to the monitoring plane; calculating the particle dose of each energy particle at each position in the target area at different depth planes based on the particle distribution pattern of each energy particle on the monitoring plane; constructing a planar dose model of the target area at different depth planes based on the particle dose of each energy particle at each position in the target area at different depth planes, and reconstructing a three-dimensional dose model by superimposing the models; and fusing the three-dimensional dose model with a three-dimensional image of the target area to obtain a three-dimensional particle dose distribution model of the target area.

The invention relates to the technical field of irradiation processing, and provides irradiation equipment, application of the irradiation equipment and a control method of the irradiation equipment, the irradiation equipment is used for processing diamond, and the irradiation equipment comprises an irradiation device, a clamping device and a cooling liquid circulating device. The irradiation device is used for generating a high-energy particle beam; an irradiation area is formed in the clamping device, the clamping device is provided with a plurality of clamping grooves which are formed in the irradiation area and open towards the irradiation device, at least one diamond is placed in each clamping groove, and a liquid cooling flow channel is formed in the clamping device; and the cooling liquid circulating device is communicated with the liquid cooling flow channel. According to the irradiation equipment provided by the invention, the production efficiency of diamond irradiation processing can be improved.

The application discloses a medium laser acceleration system and method, the medium laser acceleration system comprises a laser system for providing a high-power laser pulse; a particle injection source for providing a charged particle beam; a medium laser acceleration device for generating a high-gradient acceleration electric field; an information acquisition module for acquiring parameters of the particle beam; a diagnosis module for diagnosing a state of the particle beam and electromagnetic field transmission characteristics of the medium laser acceleration device; and a controller connected to an output end of the diagnosis module and a controlled end of the laser system, for acquiring a preset energy value of the high-energy particle beam and determining a target power and time sequence of the laser pulse according to the preset energy value. The application further provides a medium laser acceleration method based on the above medium laser acceleration system. Compared with prior art solutions, the application can provide a high-energy particle beam while reducing the size of a particle accelerator.

The application discloses an integrated high-energy particle detector for a magnetic confinement fusion device, mainly comprising a cross collimator and a scintillator plate, front, rear, upper and lower collimating holes are formed in the cross collimator, the upper and lower collimating holes are arranged in a cross shape with the front and rear collimating holes, and an electron stripping film is installed on the top of the upper collimating hole. Ions with different energies and pitch angles pass through the front and rear collimating holes, thereby hitting different coordinates on the scintillator to emit scintillation light; for high-energy neutral particles without electricity, the high-energy neutral particles pass through the lower collimating hole and the upper collimating hole in sequence, then pass through the electron stripping film to be stripped of electrons to become ions, and then make Larmor cyclotron motion in a magnetic field and hit the scintillator to emit scintillation light, therefore, the integrated high-energy particle detector can simultaneously detect high-energy ions and high-energy neutral particles in the magnetic confinement fusion device.

The application discloses a deep space vehicle intelligent decision-making method and system based on space-based edge computing. The method comprises the following steps: collecting real-time trigger data obtained by each probe arranged on an in-orbit deep space vehicle according to a corresponding real-time trigger threshold; calculating the correlation degree of the real-time trigger data between each two probes, and determining whether there is abnormal real-time trigger data based on the correlation degree; if there is abnormal real-time trigger data, the abnormal real-time trigger data that does not meet the first preset condition of light variation curve characteristics and does not meet the second preset condition of spectral characteristics is removed; based on all the remaining real-time trigger data after removal, the source direction of the cosmic high-energy particle stream relative to the deep space vehicle is calculated, and the source direction and all the remaining real-time trigger data after removal are stored in a space storage unit of the deep space vehicle. The application can reduce invalid data storage and downlink, optimize the utilization efficiency of communication bandwidth, and improve the autonomy and adaptability of deep space exploration tasks.

Methods and apparatus for performing high-energy atomic layer etching are provided. The method includes providing a substrate having a material to be etched, exposing a surface of the material to a modification gas to modify the surface and form a modified surface; and exposing the modified surface to high-energy particles to preferentially remove the modified surface relative to an underlying unmodified surface, the high-energy particles having an ion energy sufficient to overcome an average surface binding energy of the underlying unmodified surface. The high-energy particles used have a high energy; in some cases, the power applied to the bias when exposing the modified surface to the high-energy particles is at least 150 eV.

The application provides a different incident particle energy effect intelligent prediction method and system, the prediction method comprises the following steps: step one, using a machine learning method to predict the information of primary displacement atoms generated by a device irradiated by incident particles with different energies; step two, according to the information of the primary displacement atoms, using a region growing algorithm to simulate the dynamic evolution of displacement cascade of the primary displacement atoms in the device. The application intelligently and dynamically predicts and simulates the displacement cascade caused by the irradiation damage of space semiconductor devices by incident particles with different energy information, provides a basis for quickly and accurately calculating the interaction between incident particles and displacement cascade, and thus helps to reveal the physical action phenomenon of different energy particles on materials.

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 application provides a neutral atom beam generating device and a neutral atom detector calibration device. The neutral atom beam generating device comprises: an ion beam generating device for emitting a mixed beam; a particle energy testing device comprising an incident end, a first exit end, a second exit end and a collection device; the incident end is used for receiving the mixed beam; the incident end and the second exit end are communicated through an arc-shaped channel, and a deflection magnetic field is arranged at the arc-shaped channel to deflect positive ions in the mixed beam and hit the collection device; the collection device is used for obtaining a first hitting position of the positive ions; the first exit end is used for emitting a first ion beam; a processing device connected with the collection device is used for determining a deflection radius of the positive ions according to the first hitting position, and determining the energy of the positive ions and neutral atoms according to the deflection radius; and a particle screening device is used for absorbing the positive ions and negative ions in the first ion beam to emit a neutral atom beam.

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 utility model provides a sputtering cathode and a magnetron sputtering device, the sputtering cathode is used for forming a deposition film on the surface of a substrate, the sputtering cathode comprises a reaction cavity, a deposition channel and a magnet group, the reaction cavity is provided with a first opening, and the inner wall of the reaction cavity is provided with a target material layer; one end of the deposition channel communicates with the first opening, the other end faces the substrate, and a target material layer is arranged on the inner wall; the magnet group is connected with the reaction cavity, projections of the deposition channel and the magnet group in the axial direction of the deposition channel do not coincide, and the magnet group forms particle sputtering points in the reaction cavity; wherein the nearest point, close to the sputtering point, of the deposition channel is a base point, and the extension line of the connecting line of the sputtering point and the base point intersects with the interior of the deposition channel. By means of the arrangement, it is guaranteed that the high-energy particles emitted from the particle emission points can move to the surface of the substrate only after being collided at least once, the kinetic energy of the high-energy particles bombarded on the substrate can be reduced, and damage to the substrate and a deposited film when the high-energy particles bombard the substrate can be relieved or even avoided.

The invention discloses a magnetic probe diagnosis system for measuring an Alfen eigenmode structure. Two groups of magnetic probes are vertically arranged in a vacuum chamber; the two groups of vacuum feedthrough are connected through a high-temperature-resistant high-vacuum coaxial transmission line, and are also connected through a coaxial transmission line outside the vacuum chamber; voltage signals sensed by the two groups of magnetic probes are firstly accessed to the signal processing module, and signals of a target frequency band are screened through the signal processing module; the output end of the signal processing module is connected to the acquisition card, and the acquisition card acquires the voltage signal processed by the signal processing module; the output end of the acquisition card is connected to the processing terminal, and the processing terminal receives the voltage signal sent by the acquisition card and analyzes the AE instability of the high-energy particle excited Alfen eigenmode according to the received voltage signal. According to the system, AE instability characteristic signals excited during the discharge period of the experimental device can be visually observed, so that how the non-thermal equilibrium distribution of high-energy particles drives AE instability is understood.

The invention relates to the technical field of satellite high-reliability design, and provides a satellite-borne program management system based on an anti-fuse type FPGA and a design method. The invention discloses a universal satellite-borne program management system based on an anti-fuse type FPGA (Field Programmable Gate Array) and a design method. According to the invention, an anti-fuse type FPGA is adopted to realize peripheral function modules such as a lightweight general processor core, an application management unit, a bus interface driver, a FLASH control driver and the like, and embedded software is written to call the peripheral function modules and the interface driver to realize system functions such as satellite-borne program management, application processing and the like; system functions are updated by updating embedded software running in the processor, high flexibility is achieved, and meanwhile the system running reliability under the outer space complex electromagnetic environment and the high-energy particle interference condition can be guaranteed based on the design of the anti-fuse type FPGA.

The invention relates to an interference suppression method, system and device of a non-contact voltage sensor and a controller. The method comprises the following steps: monitoring high-energy particle radiation of an environment where a voltage sensor is located to obtain radiation intensity information of high-energy particles; if the radiation intensity information of the high-energy particles represents that a first anti-interference condition is met, a signal input channel of the voltage sensor is cut off, and a first output signal of an internal reference source of the sensor is collected; wherein the first anti-interference condition comprises an instantaneous high-energy particle interference event; determining an instantaneous interference deviation value of the current signal processing channel based on the first output signal; and if the voltage sensor recovers normal measurement, performing offset correction according to the instantaneous interference deviation value. According to the invention, the stability and reliability of the sensor in a complex radiation environment can be improved.