Rapid determination of90Sr by Compton suppression gamma-ray spectrometry

C. Wang; M. Yuan; J. Lee

doi:10.1007/bf02223377

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Journal of Radioanalytical and Nuclear Chemistry

Volume/Issue:: Volume 223: Issue 1-2

Rapid determination of⁹⁰Sr by Compton suppression gamma-ray spectrometry

Authors:

C. Wang

C. Wang National Tsing Hua University Institute of Nuclear Science Hsinchu Taiwan, ROC

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M. Yuan

M. Yuan Institute of Nuclear Energy Research Health Physics Division P.O. Box 3-10 325 Lung-Tan Taiwan, ROC

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J. Lee

J. Lee Institute of Nuclear Energy Research Health Physics Division P.O. Box 3-10 325 Lung-Tan Taiwan, ROC

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Pages:: 157–162

Online Publication Date:: 10 Oct 2005

Publication Date:: 17 Sep 1997

Article Category:: Research Article

DOI:: https://doi.org/10.1007/bf02223377

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Abstract

This work presents a low-level background gamma spectrometry system capable of achieving rapid determination of⁹⁰Sr without chemical separation, in a soil sample when the⁹⁰Sr to -ray emitting nuclide concentration ratio exceeds 10. The system consists of a highly efficient HPGe central detector operated in coincidence or anticoincidence with a NaI(Tl) guard detector and a NaI(Tl) backscatter detector. Experimental results indicate that the bremstrahlung radiation from a pure -emitter can be distinguished with respect to the differences in normal and coincidence spectra. The⁹⁰Sr activity can be directly detemined in the sample in less than 1 hour with a minimum detectable concentration (MDC) estimated at 0.002 Bq·g^–1 for a sample containing no appreciable -ray nuclides or other high energy, -emitting nuclides. In actual measurement, a 0.06 Bq·g^–1 MDC for contaminated soils is achieved.

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Journal of Radioanalytical and Nuclear Chemistry

Print ISSN:: 0236-5731

Online ISSN:: 1588-2780

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Journal of Radionalytical and Nuclear Chemistry
Language	English
Size	A4
Year of Foundation	1968
Volumes per Year	1
Issues per Year	12
Founder	Akadémiai Kiadó
Founder's Address	H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
Publisher	Akadémiai Kiadó Springer Nature Switzerland AG
Publisher's Address	H-1117 Budapest, Hungary 1516 Budapest, PO Box 245. CH-6330 Cham, Switzerland Gewerbestrasse 11.
Responsible Publisher	Chief Executive Officer, Akadémiai Kiadó
ISSN	0236-5731 (Print)
ISSN	1588-2780 (Online)