Calibration of gamma-ray spectrometers coupled to Compton suppression and fast pneumatic systems for the k0-standardized NAA method

H. Dung; M. Freitas; S. Sarmento; M. Blaauw; D. Beasley

doi:10.1007/s10967-008-1204-7

Journal of Radioanalytical and Nuclear Chemistry

Volume/Issue:: Volume 278: Issue 3

Calibration of gamma-ray spectrometers coupled to Compton suppression and fast pneumatic systems for the k₀-standardized NAA method

Authors:

H. Dung

H. Dung Institute for Technology and Nuclear (ITN) E.N. 10, Ap. 21 2686-953 Sacavém Portugal

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M. Freitas

M. Freitas Institute for Technology and Nuclear (ITN) E.N. 10, Ap. 21 2686-953 Sacavém Portugal

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S. Sarmento

S. Sarmento Institute for Technology and Nuclear (ITN) E.N. 10, Ap. 21 2686-953 Sacavém Portugal

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M. Blaauw

M. Blaauw Reactor Institute Delft Mekelweg 15 2629 JB Delft The Netherlands

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, and

D. Beasley

D. Beasley Institute for Technology and Nuclear (ITN) E.N. 10, Ap. 21 2686-953 Sacavém Portugal

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Pages:: 621–625

Online Publication Date:: 28 Nov 2008

Publication Date:: 01 Dec 2008

Article Category:: Research Article

DOI:: https://doi.org/10.1007/s10967-008-1204-7

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Abstract

A new Compton suppression system (CSS) for the gamma-ray spectrometer portion of the neutron activation analysis (NAA) was set up at the RPI/ITN. The pneumatic transfer system, SIPRA, for short-lived nuclides and cyclic irradiations was improved. A full calibration procedure of the CSS and SIPRA systems was performed. Two certified reference materials, NIST-SRM-1572 (Citrus Leaves) and NIST-SRM-1633a (Coal Fly Ash) were analyzed using the calibration factors. The CSS was instrumental in lowering the detection limits of Cr, Fe, Hg, Rb, Sr, Th and Zn by reducing background and/or spectral interference considerably. The analytical results were evaluated by comparison to the NIST certified values with deviations ranging from 2% to 8% for the above mentioned elements, except Zn ranging from 10% to 15% for biological and environmental samples, respectively.

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Journal of Radioanalytical and Nuclear Chemistry

Print ISSN:: 0236-5731

Online ISSN:: 1588-2780

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)