10 results about "Xenon" patented technology

The application provides a device for coupling xenon isotope separation and neon-helium purification separation and a use method thereof. Based on various non-low-temperature gas separation technologies, through multi-stage module cooperation, high-efficiency enrichment of xenon isotope raw material gas under non-low-temperature conditions and purification and purification of air separation crude neon-helium gas are coupled, including thermal coupling and intermediate material coupling. The crude neon-helium gas produced in the process is fully utilized, the energy consumption and operation complexity are significantly reduced, and the development advantage can be further improved.

This application relates to the field of quantum nondestructive testing technology, and discloses a quantum detection device and a xenon atom-based eddy current detection method. The quantum detection device includes an interconnected eddy current probe and a quantum measurement device. The quantum measurement device includes a xenon atom gas chamber for measuring the magnetic field strength of a target eddy current magnetic field. It acquires the target eddy current magnetic field of the target object, measures the magnetic field strength of the target eddy current magnetic field, and obtains the magnetic field strength distribution along the surface of the target object. Based on the magnetic field strength distribution, it detects thickness changes in the target object to obtain the weak point detection result. Its beneficial effect is that by measuring the eddy current magnetic field generated by the target object through a xenon atom gas chamber, it effectively utilizes the characteristics of xenon atoms—long coherence time and extremely low resonance frequency—thereby maintaining high sensitivity to capture weak magnetic fields at extremely low frequencies and obtaining a detection penetration depth far exceeding that of traditional sensors, achieving high-precision nondestructive testing of minute thickness differences inside the target object.

This invention relates to a multi-propellant supply mode air-breathing tangential field electric propulsion system and its supply method. The invention pertains to the technical field of air-breathing electric propulsion systems. The system includes: an electric thruster and collection device module, a microwave cathode module, a xenon gas storage and supply module, and a control and energy supply module. The multi-propellant supply mode air-breathing tangential field electric propulsion system provided by this invention, in addition to fully utilizing the thin atmosphere of the ultra-low Earth orbit (ULE), enhances the adaptability of the electric thruster under complex operating conditions by utilizing its own xenon propellant. Beyond ULE air-breathing electric propulsion missions, the xenon propellant it carries enables it to operate over a wider orbital range, covering the orbital range of traditional xenon electric propulsion and ULE space above 150 km.

The application discloses a coincidence detection device for radioactivity measurement, comprising a frame, a detector arranged on the frame, and an air inlet and outlet interface; the frame is internally provided with a gas measurement chamber; the frame is a semi-regular polyhedron comprising a triangular face and a square face, and the detector is arranged on the square face; and the detector is a cadmium zinc telluride detector. The detection device is especially suitable for radioactivity measurement of radioactive xenon, solves the defects of a high-purity germanium gamma spectrometer and a NaI+plastic scintillator beta-gamma coincidence detector, such as large volume, large weight, difficult maintenance, and difficulty in realizing portability and on-site measurement, and can achieve a lower detection limit, has higher measurement accuracy than a NaI detector, adopts a semi-regular polyhedral design for the detector shape, guarantees the spatial symmetry of the detectors, obtains a larger 4pi coverage rate of the detector, increases the volume of the measurement chamber, reduces the requirement for air separation and concentration, and solves the problem of the limited measurement chamber of a traditional beta-gamma coincidence detector.

This invention specifically relates to a method for correcting the critical boron concentration under full power conditions. Based on a three-dimensional reactive equilibrium equation and considering the influence of temperature deviation on the Doppler effect, the critical boron concentration under full power conditions is: where CB ref This represents the critical boron concentration at full power; CB m ρ represents the actual boron concentration under the measured conditions. xem Indicates the equilibrium xenon poisoning under measurement conditions; ρ xeref This represents the balanced xenon poisoning at full power; ρ rccam Indicates the reactivity introduced by the control rod under measurement conditions; pr m Indicates the actual power under the measured conditions; HFP represents full power; α pc α represents the average of the sum of the power coefficients under the measured state and the full-power state; b T represents the average of the sum of the differential boron values ​​under the measured state and the full-power state; avgm T represents the average temperature of the moderator under the measured conditions. ref (pr m ) represents the moderator reference temperature under measurement conditions; α ttcm This represents the total temperature coefficient under the measurement conditions. The invention also relates to computer equipment and a computer-readable storage medium, outlining the steps for implementing the above-described method for correcting the critical boron concentration under full power conditions. Based on a three-dimensional reactive equilibrium equation, and considering the influence of temperature deviation on the Doppler effect, this invention achieves accurate correction of the critical boron concentration under full power conditions when nuclear power units increasingly participate in peak shaving.

This invention provides a dual-mode propulsion system in the field of space propulsion technology, combining xenon propellant electric propulsion and cold gas propulsion. The system comprises a gas storage module and a pressure regulation module connected in series, with an electric propulsion module and a cold gas propulsion module connected in parallel downstream. These modules are controlled by a control and power module, which is shared by both electric and cold gas propulsion. Its advantages include solving the problem of insufficient control torque compared to a single electric propulsion system. Furthermore, because xenon is used as the working propellant, the xenon required for cold gas propulsion and electric propulsion serves as a backup for each other, resulting in high system integration. This meets the stringent limitations of satellite propulsion system size and control resources. Compared to an independent cold gas propulsion system, it achieves stable adjustment of the cold gas thruster's thrust over a wide range. Additionally, the system employs isentropic expansion decompression, reducing energy loss during decompression and lowering the power consumption required for temperature control.

The present application relates to temperature measurement technology field, especially to a kind of liquid nitrogen precooling three-phase point reproduction device, it includes: three-phase point container, temperature measurement well, radiation shield, vacuum cover, liquid nitrogen dewar, temperature measurement unit, heating unit, gas buffer unit and heat exchange gas filling unit;Liquid nitrogen dewar cover is located in the outside of vacuum cover;Heat exchange gas filling unit is used to fill in gas in cooling process and reproduction process.The present application provides a kind of liquid nitrogen precooling three-phase point reproduction device, adopts gas buffer unit, automatic inflation, avoid high pressure package and can buffer pressure;While adopting liquid nitrogen dewar precooling, combine the precision control of temperature measurement well, temperature measurement unit and heating unit, realize high-precision, low cost, long time stable operation of three-phase point reproduction;Heat exchange gas filling unit fills in gas in cooling stage and reproduction stage and strengthens heat transfer, improves temperature uniformity;Can realize the extremely high precision reproduction of xenon, carbon dioxide, sulfur hexafluoride and other three-phase points.

This application discloses a helium-xenon cooled reactor, a reactivity control evaluation method, apparatus, and equipment. The helium-xenon cooled reactor includes a reactor core and a retractable reflector layer. The retractable reflector layer includes multiple retractable reflector blocks, which are disposed on the outer side of the reactor core along the axial direction. At least one retractable reflector block can move along the axial direction of the reactor core to change the reflection effect of the retractable reflector layer. This application uses a retractable reflector layer that can move along the axial direction of the reactor core. On the one hand, this reduces the relatively complex control drum and its driving mechanism, saving manufacturing costs and space. On the other hand, the relatively compact and convenient retractable design makes control simple and convenient, avoiding potential faults such as drum falling off or jamming. The control method is safer and more efficient, and it is more beneficial for optimizing and improving the differential value of the reflector layer.

A nuclear voltaic power source utilizing liquid xenon as a high-density scintillation transducer medium combined with radioisotopes for electrical power generation. Liquid xenon, maintained at cryogenic temperatures between −111.75 and −108.1 degrees Celsius, has a density of approximately 2942 kg / m3, providing roughly 545 times the radiation interaction density of gaseous xenon. Ionizing radiation from the radioisotope interacts with liquid xenon to form Xe2 excimers that emit VUV photons at approximately 175 nm with a yield of 46 photons / keV. These photons are absorbed by wide bandgap semiconductor converters (diamond, AlN, SiC, GaN) lining the containment structure, generating electron-hole pairs extracted as electrical current. The spherical containment geometry maximizes photon capture. Cryogenic thermal management using vacuum-jacketed insulation or active cooling maintains the liquid phase. Multiple cells may be connected in series-parallel arrays for scalable power output.