The determination of uranium using short-lived fission products by cyclic and other modes of activation analysis

M. Al-Mugrabi; N. Spyrou

doi:10.1007/bf02132360

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Journal of Radioanalytical and Nuclear Chemistry

Volume/Issue:: Volume 112: Issue 2

The determination of uranium using short-lived fission products by cyclic and other modes of activation analysis

Authors:

M. Al-Mugrabi

M. Al-Mugrabi University of Surrey Department of Physics GU2 5XH Guildford Surrey (UK)

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N. Spyrou

N. Spyrou University of Surrey Department of Physics GU2 5XH Guildford Surrey (UK)

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Pages:: 277–283

Online Publication Date:: 16 Sep 2005

Publication Date:: 17 May 1987

Article Category:: Research Article

DOI:: https://doi.org/10.1007/bf02132360

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Abstract

The determination of elemental concentration in biological and environmental samples through the detection of short-lived nuclides has been of considerable interest in the last few years. In this context the relative advantages and disadvantages of cyclic activation analysis (CAA) with respect to single conventional one-shot irradiation and counting sequence (for one sample or replicate samples) and what has been termed pseudo-cyclic activation have been discussed with conflicting interpretations. It is the objective of this study to demonstrate through the irradiation of uranium standards by measurement of short-lived fission products how each mode of activation is best utilised. Application of CAA to the problem, in order to enhance signal-to-noise ratio, must also take into account an increasing dead-time with each cycle and therefore mass fractionation of a given sample and standard are investigated for replicate and pseudo-cyclic activation conditions. The variation of timing parameters in the cyclic mode, as well as irradation in a mixed reactor flux and epi-cadmium neutron flux, produces a set of equations from which half-life can be determined to confirm fission product identification in these complex gamma-ray spectra.

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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)