A Mössbauer study of the effects of γ-rays and neutron irradiation on iron oxalates

Autor:	M. F. Vereshchak, Sh. Sh. Ibragimov, A. K. Zhetbaev
Rok vydání:	1979
Předmět:	Radiochemistry Condensed Matter Physics Oxalate Electronic Optical and Magnetic Materials Ferrous chemistry.chemical_compound chemistry Radiolysis Mössbauer spectroscopy medicine Ferric Gravimetric analysis Neutron Irradiation medicine.drug
Zdroj:	Physica Status Solidi (a). 52:415-419
ISSN:	1521-396X 0031-8965
Popis:	γ-ray and neutron irradiation effects on ferrous and ferric oxalates are investigated by methods of nuclear γ-resonance spectrometry in combination with a gravimetric analysis of the dose effect on the phase ratio. Samples are irradiated by γ-rays of an Co60-source with doses up to 1420 Mrad and by neutrons in the reactor core up to an integral dose of 5 × 1017 neutrons/cm2. It is found that only Fe3+ oxalate is susceptible to radiolysis while Fe2+ oxalate at the attained doses does not undergo any changes. The study reveales the fact that the probability of a recoilless process of the formed Fe2+ oxalate is 1.4 times less than that of FeC2O4. 2 H2O synthesized by a chemical way. Based on the obtained results the conclusion is drawn that the radiolysis of Fe3+ oxalate is caused by electronic ionization and exitation and does not depend on the nature of incident particles. [Russian Text Ignored].
Databáze:	OpenAIRE
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