Double-barrelled accordance cylindrical flow-gas proportional counter tube

A proportional counter tube, cylindrical technology, used in the measurement of total beta radioactivity, the double tube conforms to the cylindrical gas flow proportional counter tube, the total alpha field of the low background alpha, beta counter, can solve the alpha, beta mutual crosstalk, shell Problems such as high volume background and low energy resolution

Pending Publication Date: 2017-05-31
上海新漫传感科技有限公司
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Problems solved by technology

[0003] Aiming at the problems in the prior art, the object of the present invention is to provide a double-tube air-flow proportional counter tube conforming to a cylindrical shape, so as to solve the problem of the single-tube air-flow proportional counter tube in the prior art, which has a high background of the shell and its own Low energy resolution, and the problem of crosstalk between α and β when measuring α and β rays at the same time

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  • Double-barrelled accordance cylindrical flow-gas proportional counter tube

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Embodiment Construction

[0016] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention will be further described below in conjunction with specific embodiments.

[0017] see figure 1 , a double-tube conforming to a cylindrical gas flow proportional counter tube, comprising a cylindrical tube body, the cylindrical tube body includes an upper cavity and a lower cavity. In this embodiment, the cylindrical pipe body is an upper and lower split structure, the upper chamber is arranged in the upper cylindrical pipe body 1, the lower chamber is arranged in the lower cylindrical pipe body 4, the upper cylindrical pipe body 1 and the lower cylindrical pipe body An O-ring 8 is arranged between the shaped pipe bodies 4 to play a sealing role.

[0018] Both the upper chamber and the lower chamber are oxygen-free copper chambers. Of course, the material of the upper chamber and the lower chamber can also be repla...

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Abstract

The present invention discloses a double-barrelled accordance cylindrical flow-gas proportional counter tube. The tube comprises a cylindrical tube body which is internally provided with an upper cavity and a lower cavity, an isolating membrane is configured to separate the upper cavity from the lower cavity, only obstructs [Alpha] particles and does not obstruct [Beta] particles, the isolating membrane is provided with an air vent hole, a sample room is arranged in the lower cavity, and an upper copper cavity and a lower copper cavity are respectively connected with ventilation interfaces; and the cylindrical tube body is earthed, the upper cavity and the lower cavity are internally provided with anode wires, and the upper cavity and the lower cavity respectively output mutually independent pulse signals at the normal work state. The problems are solved that a traditional flow-gas proportional counter tube is high in housing background and bad in resolution ratio, and [Alpha] and [Beta] perform mutual crosstalk when the total [Alpha] activity and the total [Beta] activity are measured at the same time.

Description

technical field [0001] The invention relates to the technical field of nuclear radiation detectors, in particular to a double-tube conforming cylindrical gas flow proportional counter tube, which is mainly used for total alpha and total beta radioactivity measurement of low-background alpha and beta counters. Background technique [0002] Low background α, β counter is a precision instrument for measuring low-level α, β radioactive intensity, mainly composed of main detector, anti-coincidence detector, low background lead chamber and electronic circuit. There are three types of main detectors for the existing low-background α and β counters: double scintillation detectors, gas flow proportional counters and semiconductor detectors. Among them, the gas-flow proportional counter is a single-tube cylindrical gas-flow proportional counter tube, which has high background of the shell, poor resolution, and the problem of crosstalk between α and β when measuring the total α and tot...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01T1/18
CPCG01T1/18
Inventor 刘益明徐强孙刚汪加龙吴洲
Owner 上海新漫传感科技有限公司
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