34 results about "Nuclear electronics" patented technology

The invention belongs to the field of signal processing technology and particularly relates to a digital coincidence multi-channel system for nuclear spectroscopy and nuclear electronics. In the system, an ADC is used to sample, a pulse signal waveform acquired by each channel is processed by a signal processor in real time to obtain the amplitude and arrival time of the pulse signal and store the amplitude and the arrival time in the computer; and after measurement, the amplitude and the arrival time of each pulse signal of each channel are read from the data stored in the computer, parameters of a delay time and a coincidence resolving time are selected according to a delay time spectral line, a computer ware is used to select coincidence pulse signals within the coincidence resolving time between a plurality of channels, and thus, a multi-parameter nuclear spectrum is formed. The digital coincidence multi-channel system provided by the invention has the advantages of simple structure, low cost, high signal acquiring and processing efficiency and the like.

The invention relates to nuclear electronics technology, in particular to an all-digital two-dimensional coincidence Doppler broadening system, comprising first and second detectors and a host computer; also comprising first and second acquisition channels with the same structure, FPGA digital The processing platform and the Gigabit Ethernet port; the first and second detectors are respectively connected with the first and second acquisition channels, and the FPGA digital processing platform is respectively connected with the first and second acquisition channels and the Gigabit Ethernet port. The Ethernet port is connected with the upper computer. The system simplifies the system design by adopting a dual-channel all-digital acquisition circuit, and implements pulse extraction, time scaling and time coincidence analysis in FPGA. The ADC is directly used to sample the pulse, and then it enters the FPGA digital processing platform for pulse shaping, baseline recovery, stacking identification, amplitude extraction, and time scaling to improve the Doppler broadening spectrum peak-to-book ratio by 2-3 orders of magnitude.

The utility model relates to a nuclear physics experiment simulation system. The nuclear physics experiment simulation system includes a simulated nuclear radiation source, a simulated nuclear radiation detector and a nuclear electronics processing system; the simulated nuclear radiation detector receives simulated nuclear optical pulses emitted by the simulated nuclear radiation source and photomultiplier tube high voltage emitted by the nuclear electronics processing system; and the nuclear electronics processing system receives simulated nuclear voltage pulses which are emitted by the simulated nuclear radiation detector which is electrically connected with the nuclear electronics processing system. According to the nuclear physics experiment simulation system, the simulated nuclear radiation source generates optical pulses with corresponding nuclear radiation characteristics according to different selected nuclear radiation types through utilizing an electronics method so as to simulate a nuclear radiation source; the simulated nuclear radiation detector receives the optical pulses and processes the received optical pulses according to different selected experiment processes so as to generate nuclear physics experiment data, and generates simulated nuclear voltage pulses according to the nuclear physics experiment data; the nuclear physics experiment data can be provided for the subsequent nuclear electronics processing system so as to be analyzed and processed; and the analyzed and processed data can be available for observation and sensation of learners. The nuclear physics experiment simulation system has the advantages of high simulation of nuclear physics experiments, being more approximate to real nuclear physics experiments, excellent experiment effect and favorable teaching effect.

The invention relates to nuclear electronics technology, in particular to an instruction system and control method for Doppler broadening spectrum measurement, the system includes a programmable amplifier, high-speed ADC, FPGA digital pulse analysis system and host computer; FPGA digital pulse The analysis system includes an instruction set and a controller for executing instructions, a dual-channel filtering and amplitude extraction module connected to the controller, a Gigabit Ethernet sending module, a parameter pool, a data buffer, a sending selector, and a Gigabit Ethernet receiving module. Modules and Instructions Validation Modules. The control of the system guides the controller to complete the control function of the entire FPGA digital pulse analysis system through instructions, replacing the single-chip microcomputer, and at the same time eliminating the bottleneck of the communication rate, so that the FPGA digital pulse analysis system can send various data to the host computer at the same time. Do not interfere with each other. The controller can also receive instructions from the host computer to make real-time and flexible adjustments to any parameters that need to be modified.

The preparation method for polyaniline with high conductivity in magnetic field comprises, putting the preparation device for polyaniline in magnetic field environment; with acidic medium, oxidant and dopant, synthezing and doping polyaniline with high orientation and conductivity; using added magnetic field to increase orientation of conjugate conducting high polymer. Compared with existing domestic product, the product has better conductivity and anti-corrosiveness and fit to aeronautical, astronautical, mechanism, and nuclear electronic fields.