Radon exhalation rate and radon concentration field multi-channel alpha energy spectrum measuring instrument

Abstract

This invention involves a locale multi-channel alphaspectroscopy measuring instrument for radon separation rate and radon concentration, including radon collection devices, semiconductor detectors, charge-sensitive amplifier, the main amplifier, multi-channel analyzer. In the multi-channel analyzer there has USB interface. Through the USB interface the multi-channel analyzer is linked with notebook computers. Through notebook computers we can control alpha continuous spectrum measurement and display the entire spectrum. The measuring instrument of alpha spectrum also adopts on-line and real-time spectrum-stabilizing to stabilize spectrum regulation. At the scene with the conditions of great changes in temperature and humidity, and poor measurements conditions, this invention will still ensure the stability, reproducibility and accuracy of dynamic measurement. The invention can be used in tailings surface, soil, ground, building materials, nuclear facilities places surface radon exhalation rate of -alpharay spectrometry, and can also be used for environmental radon concentration measurement and solving the tailings management-side management measure.

Description

technical field [0001] The invention relates to a measuring instrument for radon exhalation rate and radon concentration, belonging to the field of nuclear radiation detection, in particular to an on-site multi-channel α energy spectrum measuring instrument for radon exhalation rate and radon concentration, which can be used for tailings surface, soil, ground, building materials, nuclear The α energy spectrum measurement of the radon exhalation rate on the surface of the facility can also be used for the measurement of the ambient radon concentration. Background technique [0002] 222 Rn is the only gas daughter in the uranium series radioactive decay series, it is an inert radionuclide, radon nuclide through 218 Po, 214 Pb, 214 Bi, 214 Po and 210 Pb decays, and with each decay along this path, the nuclide emits radiation: alpha particles, beta particles, and gamma rays or a combination thereof. From the decay of the gaseous nuclide radon to stable 206 Pb, whose alpha...

AI Technical Summary

Problems solved by technology

[0004] α energy spectrum measurement is mostly used for indoor measurement where the temperature and humidity changes are relatively small, and it is rarely used for tailings site measurement, because the temperature and humidity of the tailings site vary greatly and the measurement conditions are harsh, and it is difficult to ensure that no corresponding measures are taken. Measurement Stability

Images