A high efficiency device for the detection of radioactive xenon isotopes

被引：9

作者：

Lamaze, GP

机构：

[1] CSTL, NIST, Gaithersburg

来源：

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT | 1997年 / 385卷 / 02期

关键词：

D O I：

10.1016/S0168-9002(96)01149-7

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

A detector has been designed for the detection of sub-Becquerel amounts of the radioactive xenon isotopes Xe-131m and Xe-133. High efficiency has been obtained by the condensation of the sample directly onto the surfaces of two closely spaced silicon surface-barrier detectors. The measurement of the Xe-131m is based onthe detection of the conversion electrons. The Xe-133 measurement is obtained by detection of the 81 keV photon in a NaI detector that nearly surrounds the silicon detectors. The minimum detectable activity for Xe-133 is 0.015 Bq. For a Xe-113m sample with no Xe-133 present, the minimum detectable activity is about 0.003 Bq.

引用

页码：285 / 289

页数：5

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