Computation of correction coefficients by means of Monte-Carlo simulation on photo activation analysis of the samples irradiated in nonuniform bremsstrahlung field of microtron

D. Grozdov; V. Kolotov; N. Dogadkin

doi:10.1007/s10967-011-1324-3

Journal of Radioanalytical and Nuclear Chemistry

Volume/Issue:: Volume 291: Issue 2

Computation of correction coefficients by means of Monte-Carlo simulation on photo activation analysis of the samples irradiated in nonuniform bremsstrahlung field of microtron

Authors:

D. Grozdov

D. Grozdov Vernadsky Institute of Geochemistry and Analytical Chemistry of the Russian Academy of Sciences, Kosygin Str., 19, Moscow B-334, 11991 Russia

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V. Kolotov

V. Kolotov Vernadsky Institute of Geochemistry and Analytical Chemistry of the Russian Academy of Sciences, Kosygin Str., 19, Moscow B-334, 11991 Russia

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, and

N. Dogadkin

N. Dogadkin Vernadsky Institute of Geochemistry and Analytical Chemistry of the Russian Academy of Sciences, Kosygin Str., 19, Moscow B-334, 11991 Russia

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Pages:: 497–501

Online Publication Date:: 23 Jul 2011

Publication Date:: 01 Feb 2012

Article Category:: Research Article

DOI:: https://doi.org/10.1007/s10967-011-1324-3

Keywords:: Gamma activation; Nonuniform irradiation field; Monte-Carlo modeling of activation; Correction of the induced activity

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Abstract

The activating field of microtron bremsstrahlung is characterized by sharp recession of intensity in lateral and longitudinal directions. Therefore, the irradiation of several samples simultaneously results in their different activation which is a source of systematic error. Evaluation of correction coefficients needed for quantitative analysis by measurement of thin copper disks placed between the samples does not result in acceptable data. For these purposes a method for 3D-activating field monitoring and Monte-Carlo simulation for computation of the needed correction coefficients has been developed. The monitor represents the copper foil wrapped round the sample assembly. The autoradiogram of the irradiated monitor is used for characterization of the activating field. The Monte-Carlo simulation model involves both the field characteristics and the results obtained while making single training analysis.

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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)