47 results about "Nuclear explosion" patented technology

The invention discloses a two-dimensional Lg wave Q value tomographic imaging method based on single station data, double station data and double event data. The method comprises the following steps that (a) regional seismic data are collected and preprocessed so that Lg wave true amplitude and a signal to noise ratio can be obtained, the threshold value of the signal to noise ratio is set, and an Lg spectral data body used for Lg wave Q value tomographic imaging is selected; (b) the double station data and the double event data are extracted from the single station data; (c) Lg wave Q value tomographic imaging is performed based on amplitude data. Northeast China adjoins North Korea, and tomographic imaging results for the northeast China can be used for accurately measuring the body wave magnitude of nuclear explosions in North Korea and accurately estimating the yield of nuclear explosions. In addition, northeast China is rich in oil gas, mineral and hydrotherm resources, the resources have a certain corresponding relation with a crustal Q value; the interchange of materials between the earth crust and the upper mantle has intense influence on earth crust attenuation; conversely, lithosphere thinning in east China can be further studied by utilizing a Q value imaging model.

The invention discloses an electronic device electromagnetic environmental effect test system and test method under an electromagnetic pulse compound field environment. A tested electronic device is fixed to a tested posture control table and placed in a uniform field test area, the tested electronic device is set to a certain working state by using an electronic device working state controller, and the tested posture control table is adjusted, a magnetic field control circuit and an electronic field control circuit are controlled to set a magnetic field amplitude value and an electronic fieldamplitude value, a magnetic field generator and an electronic field generator are subjected to linkage and trigger, and a compound field is formed to perform an irradiation effect test. The magneticfield amplitude value, the electronic field amplitude value and delaying time are continuously changed from low to high, responding phenomenon and responding signals of the tested electronic device under different interference source parameters are recorded, and effect laws are analyzed. The electronic device electromagnetic environmental effect test system and test method under the electromagnetic pulse compound field environment ensure standardization and rationality of the electromagnetic environmental effect test of the electronic device, improve accuracy of the electromagnetic environmental effect test of the electronic device, and are suitable for carrying out relative research work of an electromagnetic pulse compound field environmental effect test of a ground nuclear explosion source area.

The invention discloses a method for detecting a nuclear explosion seismic event in a specific area. The method comprises the following steps: establishing a monitoring station network for the nuclear explosion seismic event in the specific area; obtaining real-time monitoring data of each station in the monitoring station network, and providing signal monitoring point time of the ith station; calculating time range when each hypothetical event occurs; adn when the occurrence time ranges of the hypothetical events calculated by three or more than three stations have an overlapped region, deeming that one seismic event can be formed, wherein the time range of the seismic event is the overlapped time region, and thus it is concluded that the specific area may have the nuclear explosion seismic event. The method adopts a trigger-type "hypothesis-verification" event detection mode to process the signal detection result in real time, thereby greatly reducing response time, effectively improving response speed of external monitoring tasks and achieving a near-real-time rapid detection effect of the seismic event in the specific area.

The invention provides a safe refuge for families. The safe refuge is arranged in a building and comprises an anti-explosion wall, an anti-explosion door, an anti-explosion ceiling and an anti-explosion bottom plate, wherein the anti-explosion door is arranged on one side of the anti-explosion wall; the anti-explosion ceiling is positioned on the top of the anti-explosion wall; the anti-explosion bottom plate is positioned on the bottom of the anti-explosion wall; and the anti-explosion wall, the anti-explosion door, the anti-explosion ceiling and the anti-explosion bottom plate form closed space. The safe refuge for the families can simultaneously defend or partially defend the following damage events: earthquake disasters, occasional terrorist attacks (light weapon and explosion of a small amount of explosives), violent burglary, 'nuclear radiation weapons' and even nuclear explosion.

The invention provides a radioactive xenon beta-gamma coincidence detector based on a laminated scintillator. According to the detector, a single photomultiplier is adopted to read the scintillation light of each scintillator, the beta-gamma coincidence measurement is realized based on the pulse waveform analysis, so that the great simplification of a traditional beta-gamma coincidence detector structure and the matched readout electronics is realized. Besides, the detector adopting the NaI (T1) and plastic scintillator cavity structure design is of a full-surrounding detection structure, thescintillators of all layers are proper in size, and the detector has the advantages of being high in detection efficiency and low in cost. The detector can be applied to the fields of the extremely important tracer nuclide and nuclear explosion event monitoring and the nuclear reactor operation safety monitoring in environmental effluent monitoring, the nuclear accident leakage level evaluation, etc., and can also be applied to the radioactivity monitoring of a leaked gas in the processes of medical isotope production, spent fuel storage places, nuclear material aftertreatment and the like.

The invention discloses a photoelectric cathode of a nanosecond glimmer light image enhancer and the manufacturing method thereof. The photoelectric cathode is based on a Phi 18mm polybasic S20 millisecond responding photoelectric cathode, the effective diameter thereof is Phi 30mm; a conducting film is a nickel film in the thickness of nanosecond responding level 0.08 Mum; and a photoelectric emission layer is a CsNa2KSb layer in the thickness of 500 nm. During the process of preparing the photoelectric emission layer, a layer of K film in the thickness of 30 nm is formed by vapor deposition firstly, thereby facilitating the monitoring of a photoelectric current monitor controller to the film thickness in each stage during the process of preparing the photoelectric emission layer. The photoelectric cathode can well solve the problems during the process of recording the nuclear explosion process or other nanosecond responding events by using a glimmer imaging deice in the prior art, such as low speed in time response, lost event details, small effective area, small information capture and illegible details.

The invention relates to the technical field of civil engineering, in particular to a nuclear explosion resisting simulation experimental system and a nuclear explosion resisting simulation experimental method for underground civil air defense works. A prestressed concrete structural form and a parameter selecting range which are suitable for the civil air defense works are found out by researching the performance of a prestressed concrete structure under the action of a strong dynamic load, in particular to explosion resistance. The explosion resistance of the selected prestressed concrete structural form is checked by a large-scale model field chemical explosion experiment, thereby providing a design basis for application of the prestressed concrete structure in the civil air defense works.

The invention discloses a nuclear explosion earthquake event identification method. The method is characterized by, to begin with, selecting an appropriate earthquake monitoring station as a nuclear explosion earthquake event identification station; intercepting time series data, within a certain time period, of a vertical channel of the station; according to feature difference in time domain and frequency domain as well as comprehensive feature difference in time-frequency domain of the natural earthquake and the nuclear explosion earthquake, selecting waveform complexity criterion, spectrum ratio criterion and comprehensive ratio criterion as basic criteria; and finally, through evidence combination based on the D-S evidence theory, obtaining probability obtained after the criteria are combined, and comparing the probability of each event to determine the type of an event. The method can effectively and correctly provide the identification result of the nuclear explosion earthquake event through an evidence combination method based on the D-S evidence theory; and under the condition where a single criterion is ineffective, the method can still give a correct identification conclusion.

The invention discloses a large-span prestressing force groove-shaped composite plate used as a top plate of an anti-aircraft basement of 6 grades and lower than 6 grades. The composite plate is characterized in that a groove-shaped composite plate with a large span, a high load, a narrow board width and a low rib height forms a functional member together with an upper composite layer. Due to the adoption of an elastic-plastic deformation resilience characterization coefficient of a prestressing force plate, the resistance of the member under the action of a short-term effect of a nuclear explosion shock wave is improved. Therefore, materials are substantially saved, and the floor height is reduced. A groove-shaped large load meets the using requirements of an underground garage; parking spaces are saved in a large span; due to the adoption of a groove-shaped narrow board, the manufacturing cost and the floor height can be reduced; and the composite plate has an appropriate rib height and can meet load bearing requirements and the requirement of forming an air channel on a rib, the floor height is not increased, and a groove-shaped horizontal air channel is easy to connect. When the composite plate is used for the top plate of the underground garage, a construction period can be accelerated, the floor height can be reduced, the manufacturing cost can be reduced, a column grid can be saved, the parking spaces can be increased, and the grade of the underground garage can be improved.

The invention discloses a big-span and big-load prestress trough-shaped laminated plate used as a 6-level civil air defence basement roof plate, which is characterized in that a functional member is formed by the trough-shaped laminated plate with big span, big load, narrow plate width and high low-rib together with an upper laminated layer. The resistance of the member is improved under the action of short-term effects of nuclear explosion shock waves by using the elastoplastic deformation resilience characteristic coefficient of a prestress plate, therefore, many materials are saved, and the story height is also saved. The invention has the advantages that: the big trough-shaped load meets the use requirement of an underground garage; the big span design ensures more parking spaces; thenarrow trough-shaped plate surface saves the cost and the story height; the moderate rib height meets the requirements of loading and opening of an air duct on a rib, the story height is not increased, and a trough-shaped transverse air duct is easily connected. Because the big-span and big-load prestress trough-shaped laminated plate used as the 6-level civil air defence basement roof plate is utilized on an underground garage roof plate, the construction period can be accelerated, the story height can be decreased, the cost can be lowered, column grids can be saved, the parking spaces can be increased, and the grade of the underground garage can be improved.

The invention discloses a ground nuclear explosion electromagnetic pulse composite environment simulation system and simulation method. The system comprises a magnetic field control circuit, an electric field control circuit and a magnetic field coil, the magnetic field control circuit is communicated with one end of the magnetic field coil through a first time delay circuit, the magnetic field coil is controlled to generate a pulsed magnetic field environment, the other end of the magnetic field coil is communicated with the electric field control circuit through a Rogowski coil, a signal acquisition circuit, a signal conditioning circuit and a second time delay circuit in sequence, a uniform field test space is generated inside the magnetic field coil, a radiation antenna surrounds the uniform field test space, and the electric field control circuit is connected with the radiation antenna to generate a pulsed strong electric field environment in the radiation antenna space. The system truly and effectively simulates the electromagnetic pulse electric field and magnetic field radiation environment generated by ground nuclear explosion, and achieves the ground nuclear explosion electromagnetic pulse composite field environment simulation; the simulation method based on the simulation system is scientific, reasonable, safe and reliable and is suitable for conducting ground nuclear explosion electromagnetic pulse environmental effect related research work.

The invention provides a radiation-resistant and high-low-temperature single-mode optical fiber. The optical fiber sequentially comprises a fiber core, a cladding layer and a coating layer from insideto outside, wherein the fiber core is a pure quartz glass fiber core, and the mole percentage of silicon dioxide in the fiber core is 100%; the cladding layer is a fluorine-doped quartz glass cladding layer, and it is regulated that the cladding layer comprises, by mole, 40-60% of dichlorodifluoromethane and the balance silicon dioxide; the coating layer is made of silicon-based modified ultraviolet curing paint. The invention further provides a manufacturing method of the radiation-resistant and high-low-temperature single-mode optical fiber. According to the optical fiber, the induced lossafter radiation is low, the optical fiber is high in radiation-resistant dose and dose rate, optical signals can be stably transmitted in a wide work temperature range, the optical performance is compatible with common communication optical fibers, the large space radiation environment for high-low-temperature alternate conversion of the optical fiber is ensured, and the optical signal transmission communication reliability and environment adaptability in the ground nuclear power plant nuclear explosion test environment high in instantaneous dose rate are ensured.

The invention relates to a specific region earthquake event alarm method. The method includes, at first, selecting an appropriate alarm array within a given time period and a specific area; reading the real-time data of each substation of the alarm array, and performing the real-time F-K calculation to obtain the azimuth and slowness result of the maximum energy signal in the data; and clustering the alarm array data to obtain the clustering channel result according to the obtained azimuth and slowness calculation result, comparing the calculated azimuth, slowness and signal detection results with pre-set thresholds, and performing event alarm on the eligible signals. The flow is concise, the computational complexity is less, and the method is easy to implement. The method solves the technical problem of array data processing for specific region nuclear explosion earthquake event alarm, further completes the monitoring capability of specific region nuclear explosion events, and has an important meaning in overseas underground nuclear test inspection.

The invention discloses a marker combination for predicting death due to severe ionizing radiation injury. The invention provides a marker combination which can be taken as an index for predicting thesurvival and death of mice under severe radiation, and provides application of the marker combination to the prediction of the death rate in severe radiation. The marker combination is of important significance in the classified treatment of on-site injured people, particularly a large scale of irradiated people in nuclear explosion, nuclear accidents and nuclear terrorist attack.

The invention relates to a layered magnetic fluorescence nanometer assembly capable of triggering nuclear explosion of cancer cells. The layered magnetic fluorescence nanometer assembly is characterized by being assembled with a dextran-magnetic layered double hydroxides-fluorouracil magnetic slow-released drug delivery system serving as a therapeutic drug, a water-soluble near-infrared ZnHgSe quantum dot serving as a fluorescent tracer through an electrostatic composite technology. The nanometer assembly can start an oncosis path of the cancer cells, and trigger cell nucleus explosion and cytoclasis; with the assistance of a cell imaging technology, the morphological change of the oncosis process of the cells can be disclosed. The preparing technology is simple and efficient, the producthas a function integrating diagnosis and treating, and has special meanings and good application prospects in the aspect of disclosing an oncosis mechanism of the cells and clearing away tumor lesions.

The invention relates to a nuclear explosion electromagnetic pulse signal source simulation device. The signal generation unit of the present invention is realized by a digital circuit, that is, DSP+DDS is used to form the main circuit of the signal source simulation device, and the setting and control of the DDS by the DSP are realized through the SPI interface. The crystal oscillator is the DSP clock input, and the DSP system clock output signal is used as the DDS clock input. The DSP sets the DDS internal PLL through SPI communication to control the DDS system clock frequency, and then can achieve 300MHz~30MHz frequency conversion output. DDS can obtain a maximum output signal of 400MHz. The frequency conversion period is adjustable, and the minimum frequency conversion period is 4ns; the amplitude is adjustable, which is suitable for simulating the electromagnetic pulse signal of the nuclear explosion electromagnetic pulse in the atmosphere and the longitudinal transmission through the ionosphere, especially for the simulation of the electromagnetic pulse signal of the nuclear explosion in the satellite detection nuclear explosion signal test , is of great significance to the national defense construction of our country.

The invention discloses a method for collecting and using fuel oil additives 75Br and 76Br. The method comprises the following steps of: generating solar neutrino impulse waves by adopting a method with the application number of CN200810243312.X disclosed by the State Intellectual Property Office; 2, condensing and collecting liquid 75Br and 76Br by adopting a collecting system three chambers of which are communicated with one another; 3, injecting helium gas into the collecting system and sealing; 4, spirally moving the collecting system upwards and downwards to ensure that the solar neutrino impulse waves irradiate arsenic-selenium-germanium-strontium powder intermittently and uniformly; 5, controlling the temperature of the first chamber at about 30 DEG C and controlling the temperature of the second chamber at about 0 DEG C; 6, dripping bromine liquid into iodine powder in the general mass ratio of bromine to iodine of 1:(100000-1000000) and sealing at a low temperature for storing; 7, periodically replacing the arsenic-selenium-germanium-strontium powder and keeping the pressure in the collecting system at about a standard atmospheric pressure; and 8, obtaining nuclear energy in a smaller-scale nuclear explosion mode by using a bromine-iodine mixture prepared by fuel oil combustion or laser heating.

The invention discloses a novel composite UHPC projectile-resistant layer capable of resisting repeated attacks. The composite projectile-resistant layer is composed of three different UHPC structurallayers, wherein the top layer is a corundum sphere steel bar UHPC structure; the middle layer is a steel pipe UHPC dense arrangement structure; and the bottom layer is a UHPC air interlayer structure. The novel composite UHPC projectile-resistant layer has the three different efficiently-protective UHPC structures, and comprehensively reduces the catastrophic damage caused by war. Multilayer corundum spheres in the top layer can enable projectile fragments to continuously deflect so as to reduce the speed and destructive power of the projectile fragments and change original trajectories. Dense plum-shaped steel pipe UHPC in the middle layer provides continuous resistance, so that the projectile fragments continue to slow down and even stay in steel pipes. The UHPC air interlayer structurein the bottom layer diffuses blast waves carried by the projectile fragments or nuclear explosion while providing partial resistance so as to achieve the effect of reducing secondary hazards.

The invention provides a radioactive contamination numerical simulation method based on a gas-solid two-phase simulation method, and solves the problem of unreasonable description of a gas-solid separation effect and a turbulence diffusion effect in an existing nuclear explosion radioactive smoke cloud particle atmospheric transportation and settlement simulation method. The method comprises the following steps: 1) setting a contamination distribution calculation area according to explosion equivalent and average wind speed, setting the total number of simulated particles and recording grid resolution; 2) establishing initial space distribution of nuclear explosion radioactive particles by adopting a stable smoke cloud model; 3) calculating turbulence parameters; (4) simulating the atmospheric transportation and sedimentation process of a certain radioactive particle in the stable smoke cloud by using a gas-solid two-phase flow method until the radioactive particle falls to the groundor escapes from the calculation boundary, and adopting a time advancing principle in the gas-solid two-phase flow method, and (5) according to all the calculated sedimentation positions of the radioactive particles, performing statistics to give a distribution result of ground surface contamination.

The invention relates to a simulation device for a rapid-rising edge and broad-pulse strong-electric field environment. According to the simulation device, an electromagnetic pulse strong-electric field radiation environment generated by ground nuclear explosion can be simulated, and meanwhile, the simulation device has the characteristics of reasonable structure, scientific design, excellent performance, convenience and rapidness in mounting and maintenance and the like, so that the problems of an existing simulation technique cannot simultaneously meet rapid-rising edge and broad-pulse parameters, and an effective strong-electric field environment cannot be constructed are solved, the strong-electric field environment for truly simulating the ground nuclear explosion indoors is realized;and the simulation device can be widely applied to relevant researches of electromagnetic effects and electromagnetic protection.

The invention discloses a method and system for generating power by using nuclear fusion. According to the method and system of the invention, energy generated miniature nuclear fusion which works under a non-critical state is utilized to lift the level of water; the gravitational potential energy of the water is utilized to generate power; a fusion target and laser ignition are adopted to realize nuclear fusion; laser is inputted into an end portion of the glass tube of the fusion target; a laser shock ignition technique is utilized to make a deuterium pellet experience fusion; the explosion equivalent of the deuterium pellet each time is safe for a nuclear reaction well; under a condition that the reaction well is not damaged, the level of the water in the nuclear reaction well is lifted through each miniature nuclear explosion, so that the water will flow into an external annular reservoir; a power generation device is arranged at the bottom of the annular reservoir; and the difference of the elevations of the bottom of the annular reservoir and the sea level is utilized to generate power. The system provided by the invention is an unlimited, clean and safe new energy power generation system using nuclear fusion.

The invention provides a method for avoiding nuclear radiation pollution caused by a nuclear leakage accident. A nuclear reactor is moved from the ground to the underground. The method comprises the following steps of: 1, moving the nuclear reactor and a safety hood thereof to the underground; 2, setting the depth limit to be enough to suppress shock waves of a nuclear explosion; 3, setting an elevator raise and arranging a ventilation pipeline and a wire pipeline for providing the convenience for repair and maintenance; and 4, filling fine sand grains in a reactor along the raise and the pipelines when an accident is out of control; sealing the raise and the pipelines by pouring cement concrete; and burying a part which is close to the ground by using soil.