11 results about "Energy particle" patented technology

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.

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 application discloses a space spacecraft AI chip-oriented target detection network anti-radiation reinforcement method and belongs to the technical field of neural network anti-radiation. The method comprises the following steps: obtaining a target detection network model; respectively adopting Dropout enhancement and exponential bit quantization optimization models; and adopting the optimized model to perform target detection in a space environment. The application can not only significantly improve the robustness of a neural network in a space radiation environment, but also maintain the reasoning accuracy and speed of the model, solves the reliable operation problem of a deep learning model in a space environment, and optimizes the stability and task success rate of a spacecraft intelligent system. The application proposes a training-reasoning collaborative optimization strategy for the single event upset problem caused by high-energy particle radiation in a space environment, and provides reliable protection for AI application on a spacecraft.

The application provides a solar energetic particle (SEP) source region injection profile inversion fitting method, a fitting device, a storage medium and a terminal. The inversion fitting method provided by the application comprises constructing an inversion fitting equation. The inversion fitting equation uniformly describes the symmetric and asymmetric source region injection profile by introducing a continuously adjustable logarithmic Gaussian function with a shape parameter. The function is embedded in a physical framework that comprehensively considers the energy-dependent propagation delay and the instrument limited energy channel integration. The inversion fitting method provided by the application can improve the inversion accuracy and universality of the source region injection profile of various SEP events, and provides a key and reliable source parameter input for space weather physical prediction.

This invention discloses an integrated silicon carbide ΔE-E telescope high-energy particle detector and its fabrication method. Using heavily doped p-type silicon carbide as a substrate, a p-type silicon carbide buffer layer and an L-shaped N-type silicon carbide epitaxial layer are fabricated on top of the substrate. A heavily doped N-type silicon carbide structure is placed on top of the L-shaped N-type silicon carbide epitaxial layer. A columnar heavily doped N-type silicon carbide structure connects to the top of the device around the L-shaped N-type silicon carbide structure. An N-type silicon carbide epitaxial layer is fabricated within the region enclosed by the heavily doped N-type silicon carbide structure and the columnar heavily doped N-type silicon carbide structure. A heavily doped p-type silicon carbide structure is placed on top of the N-type silicon carbide epitaxial layer. An upper electrode is placed on the heavily doped p-type silicon carbide, and lower electrodes are placed on the heavily doped p-type silicon carbide structure and the columnar heavily doped N-type silicon carbide structure, respectively. An insulating dielectric protective layer is filled between the two lower electrodes and outside one of the lower electrodes. The detector of this invention meets the requirements of radiation resistance, high temperature resistance, and miniaturization.

This invention belongs to the field of radiation detection and discloses a rare-earth-doped phosphate microcrystalline glass for high-energy radiation detection, its preparation method, and its application. The rare-earth-doped phosphate microcrystalline glass comprises 0.01~2 mol% rare-earth ions, wherein the rare-earth ions are Eu. 2+ The crystalline phase precipitated in the glass-ceramic is LiSrPO4. The preparation method includes the following steps: weighing the raw materials by molar percentage, thoroughly grinding them, melting them to obtain a glass melt, cooling and shaping them into a transparent glass block, annealing to obtain a precursor glass, and then heating, holding, and cooling to obtain the glass-ceramic. The preparation method of this invention is simple, can prepare large-size samples, is low-cost, and is easy to mass-produce industrially. The obtained rare-earth-doped phosphate glass-ceramic possesses excellent optical properties and high-energy ray and high-energy particle detection performance, superior to commercially available lithium-ion scintillator glass. It can be used in radiation detection, energy exploration, environmental monitoring, and other related fields, and has broad application prospects.

The present application provides a high-energy particle detection method and apparatus, configured for acquiring an LET energy spectrum of a radiation environment in a low-cost manner, so as to acquire an LET energy spectrum of a high-energy particle radiation environment, and enable high-energy particle detection. The high-energy particle detection apparatus comprises a first CMOS image sensing unit and a processing unit; the first CMOS image sensing unit is configured for generating a first light spot image on the basis of high-energy particle radiation, the first light spot image comprising at least one first light spot, and light spots of different sizes among the at least one first spot respectively corresponding to different LET values; and the processing unit is configured for generating an LET energy spectrum according to the first light spot image.

The application discloses a high kinetic energy particle cutting rock breaking and tunneling device, which comprises a base, a mechanical arm, a rock fissure and tunneling form real-time acquisition device, a rock breaking material supply system and a medium pressurizing device arranged on the base. The information collected by the structure surface trace line and tunneling form real-time acquisition device is transmitted to a control module. After the control module processes the information, a three-dimensional model of a tunnel excavation area is established, and rock fissure characteristics and trends are analyzed. The rock fissure cutting is preferentially planned. The high kinetic energy particles impact the rock in the tunnel area to be excavated, so that the rock generates a large instantaneous impact stress, and the impact point causes impact damage. The stress wave generated by the impact center point spreads outward, causing the rock to flow plastically and generate damage cracks and fissures. The high-speed and high-pressure abrasive and medium continuously impact the damage cracks and fissures, so that the cracks and fissures are expanded and connected, and the rock damage effect is further expanded.

The application belongs to the technical field of integrated circuits, and discloses a method for measuring high-energy particle ionization charge particle size, which comprises the following steps: performing irradiation experiments by adopting a mode in which a single high-energy particle is vertically incident on a static random memory circuit provided with multiple pages; in the irradiation experiments, a single event upset threshold of the multiple pages of the static random memory circuit is acquired; and based on the single event upset threshold of the static random memory circuit and a series inter-device spacing of the multiple pages, the high-energy particle ionization charge particle size is determined. The method for measuring high-energy particle ionization charge particle size provided by the application can realize reliable evaluation of the high-energy particle ionization charge particle size.

Particle detector for spatially resolved detection of high-energy particles, comprising a first position-sensitive diode (PSD), wherein the first PSD has a first substrate with a first sensor surface and an opposite first back surface, a second PSD, wherein the second PSD has a second substrate with a second sensor surface and an opposite second back surface, wherein the first PSD and the second PSD are arranged along a common axis, the common axis passing through the first sensor surface and the second sensor surface.

This application relates to the field of space environment detection technology, specifically to a multi-sphere sensor for space particle energy spectrum detection, comprising a housing assembly, a particle shield, a detection sensor assembly, and a circuit output assembly. The particle shield is disposed inside the housing assembly and has multiple mounting holes. An elastic damping structure is provided between the bottom of the housing assembly and the particle shield. The detection sensor assembly includes multiple sensor structures, each correspondingly mounted within a mounting hole and fixed to the particle shield by a limiting mechanism. The circuit output assembly includes a signal conversion and processing circuit, electrically connected to each sensor structure. This application integrates multiple sets of particle sensor structures within the same particle shield, utilizing a particle collimation port to attenuate high-energy particles into medium- and low-energy particles before they enter the crystal, enabling the crystal to generate measurable electronic signals, effectively improving the detection efficiency of space particles.