Measuring Method of Air Absorbed Dose Rate Based on Pulse Height Spectrum

Abstract

The embodiment of the invention relates to an air absorption dose rate measurement method based on pulse height spectrum. The method comprises the steps that a terminal device receives a first operation instruction; pulse height spectrum information and background spectrum information are acquired and analyzed, and fluence spectrum data and background fluence spectrum data are generated; the fluence spectrum data comprise track number data and first count data; the background fluence spectrum data comprise second count data; parameter information is acquired, and the parameter information comprises pulse height spectrum measurement time, background pulse height spectrum measurement time, energy slope data, energy slant range data and fluence spectrum dose conversion coefficients; energy data are acquired according to the energy slope data, the energy slant range data and the track number data; first count rate is acquired according to the first count data and the pulse height spectrummeasurement time; second count rate is acquired according to the second count data and the background pulse height spectrum measurement time; and according to the energy data, the first count rate, the second count rate and the fluence spectrum dose conversion coefficients, the air absorption dose rate is acquired.

Description

technical field [0001] The invention relates to the technical field of nuclear radiation detection, in particular to a method for measuring air absorbed dose rate based on pulse height spectrum. Background technique [0002] Absorbed dose refers to the energy absorbed by a unit mass of material after being irradiated. Absorbed dose rate refers to the absorbed dose per unit time. Air absorbed dose rate is an important indicator for evaluating the level of ionizing radiation. Radiation dose exposure has important reference value. [0003] Current methods of measuring air absorbed dose rate include direct measurement with dosimeters using ionization chambers, scintillators, or semiconductor probes. Using semiconductor gamma energy spectroscopy to measure air absorbed dose rate has the advantages of accurate and efficient measurement, but it involves a lot of complicated function calculations. Contents of the invention [0004] The purpose of the present invention is to prov...

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Problems solved by technology

Using semiconductor gamma energy spectroscopy to measure air absorbed dose rate has the advantages of accurate and efficient measurement, but it involves a large number of complex function calculations

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