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Mobile type digital positron life spectrometer

A positron, mobile technology, applied in the direction of instruments, scientific instruments, material analysis using wave/particle radiation, etc., to achieve the effect of high cost performance and high instrument resolution

Inactive Publication Date: 2010-12-22
WUHAN UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Due to the large number of electronic components in the traditional positron lifetime spectrometer and the limitation of the accuracy of the electronic components, the instrument is relatively large and difficult to move

Method used

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  • Mobile type digital positron life spectrometer
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Embodiment Construction

[0018] The present invention further proposes that the digital positron lifetime spectrum analysis and drawing system generates the positron lifetime spectrum after extracting the waveform pulses from the data storage module, performing pulse identification and pulse timing on the waveform pulses. Another implementation of the pulse retort is that the threshold interval is preset, and the parameters of the waveform pulse are used for pulse timing analysis and processing and drawn into a positron lifetime spectrogram when the parameters of the waveform pulse are within the threshold interval; the parameters include pulse area, pulse amplitude, Pulse area amplitude ratio and pulse rise time. In this way, the pulse identification methods include pulse area identification, pulse amplitude identification, pulse area amplitude ratio identification, pulse rise time identification, and a combination of several types of pulse identification. Different retort identification methods and ...

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Abstract

The invention relates to a mobile type digital positron life spectrometer comprising a digital oscilloscope, two photoelectric detectors and a high-voltage power supply, wherein the digital oscilloscope is provided with a digital positron life spectrum analyzing and drawing system, and the two photoelectric detectors are oppositely arranged. The designed digital positron life spectrometer has few components and convenient transportation, is very easy to assemble and use and can jointly identify impulse amplitude, impulse area amplitude rate and rise time in software. Compared with the traditional life spectrometer, the mobile type digital positron life spectrometer has higher instrumental resolution and price advantage at the same time, thereby having high performance price ratio.

Description

technical field [0001] The invention relates to a mobile digital positron lifetime spectrometer. Background technique [0002] Positron lifetime spectroscopy is a powerful tool to characterize the microstructure of materials, and it is widely used in the research of metals, semiconductor materials, superconducting materials, polymer materials and porous materials. The traditional positron lifetime spectrometer is mainly composed of two scintillation photodetectors, two constant-ratio timing discriminators, a time-amplitude converter, a multi-channel analyzer, a high-voltage power supply and several wires. Due to the large number of electronic components in the traditional positron lifetime spectrometer and the limitation of the accuracy of the electronic components, the instrument is relatively large and difficult to move. Contents of the invention [0003] The problem to be solved by the present invention is to provide a mobile digital positron lifetime spectrometer, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N23/08
Inventor 李辉王柱邵云东王少阶
Owner WUHAN UNIV
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