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Method and device capable of automatically eliminating PIPS an energy spectrum peak temperature drift

A technology of temperature drift and energy spectrum, which is applied in the direction of X-ray energy spectrum distribution measurement, etc., can solve the problems of large influence of temperature and low accuracy of energy spectrum measurement

Inactive Publication Date: 2014-08-13
NANHUA UNIV
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Problems solved by technology

[0003] The purpose of the present invention is to overcome the problem that the PIPS detector is greatly affected by temperature and the measurement accuracy of the energy spectrum is low in the prior art, and provides a method and device for automatically eliminating the temperature drift of the PIPS a energy spectrum peak

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  • Method and device capable of automatically eliminating PIPS an energy spectrum peak temperature drift
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  • Method and device capable of automatically eliminating PIPS an energy spectrum peak temperature drift

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Embodiment Construction

[0027] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0028] Such as figure 1 As shown, a device for automatically eliminating the temperature drift of the PIPS a energy spectrum peak, including a PIPS detector, a preamplifier circuit, an amplification forming circuit, a pulse amplitude discrimination circuit, a single-chip microcomputer, a threshold automatic adjustment circuit and a temperature and humidity sensor;

[0029] Select the single-chip microcomputer model as STC15F2K60.

[0030] The PIPS detector, the preamplifier circuit, the amplification forming circuit, the pulse amplitude discrimination circuit and the single-chip microcomputer are connected in sequence, and the input end and the output end of the threshold value automatic adjustment circuit are respectively connected with the output end of the single-chip microcomputer and the pulse amplitude discrimination circuit. The temperature and ...

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Abstract

The invention discloses a method and device capable of automatically eliminating PIPS an energy spectrum peak temperature drift. According to the processing method, a threshold automatically-adjusting circuit is applied to eliminate peak position drift of a PIPS detector caused by temperature change, threshold level of a pulse amplitude discriminator circuit is automatically adjusted in real time through the threshold automatically-adjusting circuit, the adjustment is carried out automatically according to the environmental temperature change, and it is guaranteed that alpha particle energy resolution is free of environmental influences. The device comprises the PIPS detector, a amplification circuit, an amplifying and forming circuit, the pulse amplitude discriminator circuit, a single-chip microcomputer, the threshold automatically-adjusting circuit and a temperature and humidity sensor; the whole device is simple in structure and convenient to operate; monitoring sensitivity is improved, and the requirement for continuous monitoring of a nuclear facility field can be met.

Description

technical field [0001] The invention relates to an automatic adjustment method and device for eliminating PIPS a energy spectrum peak temperature drift. Background technique [0002] Radon measurement is a complex problem involving multidisciplinary fields such as nuclear science, nuclear technology, electronic technology, computer technology, geographical science and environmental science. In recent years, the emergence of semiconductor detectors, especially the PIPS (Ion Implanted Silicon Detector) can well identify various nuclides (such as 218 Po, 214 Po, etc.) released a particle energy, but the temperature has a great influence on the semiconductor. Due to the change of the measurement environment temperature, the signal amplitude of the α particle with the same energy will change after being detected by the PIPS detector, so that the α particle cannot be accurately identified. Particle energy, which in turn affects the accurate measurement of radon. Therefore, it i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01T1/36
Inventor 肖德涛李志强赵桂芝单键吴喜军李超何正忠
Owner NANHUA UNIV
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