Paramagnetic centers by X-ray-irradiation of aluminium hydroxide: Epr spectroscopy, radiation chemical yield and kinetics of thermal decay of paramagnetic centers

J. Kuruc

doi:10.1007/bf02163064

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Journal of Radioanalytical and Nuclear Chemistry

Volume/Issue:: Volume 154: Issue 1

Paramagnetic centers by X-ray-irradiation of aluminium hydroxide

Epr spectroscopy, radiation chemical yield and kinetics of thermal decay of paramagnetic centers

Author:

J. Kuruc

J. Kuruc Comeniu University Department of Nuclear Chemistry, Faculty of Sciences CS-842 15 Bratislava Czech and Slovak Federal Republic

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Pages:: 61–72

Online Publication Date:: 07 Nov 2005

Publication Date:: 17 May 1991

Article Category:: Research Article

DOI:: https://doi.org/10.1007/bf02163064

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Abstract

EPR spectra of paramagnetic centers originating from X-ray-irradiation of aluminium hydroxide at room temperature have been measured. The EPR spectrum represents a superposition of EPR spectra of ionic centers O^–, holes of type

and trapped electrons. Radiation chemical yield of paramagnetic centers observed at room temperature (293 K) is G(

spins.)=4.4±0.6) spins per 100 eV absorbed energy. The decay of paramagnetic centers in irradiated Al(OH)₃ was oberved at 293 K. The rate constant of the paramagnetic centers decay in irradiated Al(OH)₃ is K₂=(0.0980±0.0019) kg·mol^–1·min^–1 and their half-life is 9.43±0.18 days.

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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)