Gamma-ray self attenuation calculations in neutron activation ananlysis: A problem overlooked

D. Dodoo-Amoo; S. Landsberger

doi:10.1023/a:1010659521010

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Journal of Radioanalytical and Nuclear Chemistry

Volume/Issue:: Volume 248: Issue 2

Gamma-ray self attenuation calculations in neutron activation ananlysis: A problem overlooked

Authors:

D. Dodoo-Amoo

D. Dodoo-Amoo University of Texas at Austin Nuclear Engineering Teaching Lab, PRC-9000 Austin Texas 78712 USA

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S. Landsberger

S. Landsberger University of Texas at Austin Nuclear Engineering Teaching Lab, PRC-9000 Austin Texas 78712 USA

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Pages:: 327–332

Online Publication Date:: 29 Oct 2004

Publication Date:: 17 May 2001

Article Category:: Research Article

DOI:: https://doi.org/10.1023/a:1010659521010

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Abstract

Neutron activation analysis has for many years been considered to be a method that relatively is free from matrix interference. While this may be true for the majority of samples such as liquid, biological, air filters and geological aluminum-silicate specimens, there are many other types of samples that contains high Z materials in relatively high abundance that do attenuate low and medium energy gamma-rays. Samples such as heavy metal contaminated soils, ore concentrates and meteorites are prime examples. One can minimize the gamma-ray attenuation phenomena by using small masses of sample. This is not possible when using field environmental samples that are more than often not homogenous, and more sample mass is needed. Using a program called SELFABS, we have developed a very careful evaluation of the self-attenuation factors for a several of low and high Z reference materials. Special attention was given to the effect of the sample mass. Our conclusions indicate that while a great effort is given to various QA/QC procedures little literature information is ever published on the need or use for the calculation of these self-attenuation factors.

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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)