A Change in the Parameters of Si(Li) Detectors under Exposure to α Particles

被引：2

作者：

Bazlov, N. V. ^{[1
,2
]}

Bakhlanov, S. V. ^{[1
]}

Derbin, A. V. ^{[1
]}

Drachnev, I. S. ^{[1
]}

Izegov, G. A. ^{[1
,2
]}

Kotina, I. M. ^{[1
]}

Muratova, V. N. ^{[1
]}

Niyazova, N. V. ^{[1
]}

Semenov, D. A. ^{[1
]}

Trushin, M. V. ^{[1
]}

Unzhakov, E. V. ^{[1
]}

Chmel, E. A. ^{[1
]}

机构：

[1] Natl Res Ctr, Petersburg Nucl Phys Inst, Kurchatov Inst, Gatchina 188300, Leningrad Oblas, Russia

[2] St Petersburg State Univ, St Petersburg 199034, Russia

来源：

INSTRUMENTS AND EXPERIMENTAL TECHNIQUES | 2020年 / 63卷 / 01期

基金：

俄罗斯科学基金会; 俄罗斯基础研究基金会;

关键词：

BETA-SPECTROMETER; RADIATION;

D O I：

10.1134/S0020441220010029

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A spectrometer based on a Si(Li) detector has been tested by exposure to alpha particles with the aim of determining changes in the detector characteristics versus the fluence. As a result of 60-day measurements with a total fluence of 6.2 x 10(9) alpha particles, it has been established that the dependence of the deterioration in the energy resolution of alpha-particle peaks on the fluence is described by a linear function with a slope of Delta sigma/Delta CYRILLIC CAPITAL LETTER EF = (8.4 +/- 0.4) x 10(-10) keV/alpha. The measured amplitude of the alpha-particle momentum decreases linearly with increasing fluence with a slope of (-4.8 +/- 0.6) x 10(-9) keV/alpha. These effects do not prevent reliable discrimination between the signals from alpha particles and fission fragments until the fluence reaches a value of 10(10) alpha particles when the Si(Li) detector is a part of a neutron source for detecting fission fragments.

引用

页码：25 / 29

页数：5

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