Radioactive sample activity multipath automated measurement system

Abstract

The invention discloses a radioactive sample activity multipath automated measurement system. The system comprises a sample band bracket device, a motion control module, a shielding lead chamber, a measurement module, a digital multi-channel analysis module, a serial communication module and a PC; the motion control module is connected with the sample band bracket device to control the movement ofthe sample band bracket device; the measurement module is connected with the digital multi-channel analysis module to output detection data and is used for detecting the radioactivity of samples; andthe PC outputs control signals to the sample band bracket device, the motion control module and the serial communication module and receives acquired data output by the digital multi-channel analysismodule. The radioactive sample activity multipath automated measurement system has the advantages that the radioactive activity of a large number of active samples can be measured rapidly, multiple detectors can automatically measure 5 paths of sample bands simultaneously, and each path of sample bands can be automatically controlled and moved; and the problem of measuring errors caused by the individual differences of different detectors can also be solved.

Description

technical field [0001] The invention relates to the field of nuclear radiation detection, in particular to a multi-channel automatic sample radioactivity measurement system. Background technique [0002] The study of reactor neutron flux and neutron flux density is an important part of nuclear reactor research. The reactor neutron flux and flux density can be calculated by using the reactor to activate certain materials and measuring the radioactivity of the activated sample. In this study, activation of a large number of samples was required in order to obtain accurate results. [0003] Generally, the half-life of activated samples is relatively short. When measuring these samples, the activation start time and measurement start time are required to be very precise. In the case of a large number of samples, the error caused by the difference in measurement time has a great influence on the measurement results; in the case of a low sample activity, even if it is corrected b...

AI Technical Summary

Problems solved by technology

In the case of a large number of samples, the error caused by the difference in measurement time has a great influence on the measurement results; in the case of low sample activity, even if it is corrected by calculation, the error is difficult to control

[0004] The current sample activation detection is realized by measuring the detector corresponding to a single radioactive sample, and the measurement sample needs to be replaced manually during the measurement process. This measurement method is inefficient when faced with a large number of radioactive samples to be tested. Complicated, high detection time cost

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