Primary Radiolytic Reactions in the Auger Blob Formed by Radioactive Transformation of ^{57}Co into ^{57}Fe in Frozen Aqueous Medium

• Authors: S. Stepanov , Yu. Perfil'ev , V. Byakov , L. Kulikov
• Languages of publication: EN

Abstracts

EN

The emission of the Auger electrons during the formation of the Mössbauer nucleus ^{57}Fe leads not only to the formation of multicharged ^{57}Fe^{n+} ion, but also to the appearance of the Auger blob, a cloud of several hundreds of ion-electron pairs (H_2O^{+}, e¯) in the solvent around the Fe ion. Fast radiation-chemical reactions therein determine the experimentally observable ratio of the yields of final chemically stable charged states of the Mössbauer ions (Fe^{3+} and Fe^{2+}). This ratio strongly depends on reaction rates constants between H_2O^{+}, e¯, and the solute S. We have shown that in contrast to radiation chemical data the reactivity of NO_{3}^{-} anions with quasi-free track electrons in frozen aqueous solutions exceeds those of H_{3}O^{+}, ClO_{4}^{-}, and HSO_{4}^{-} ions only by a factor of three instead of ≈ 100 which follows from the radiation chemical experiments.

Keywords

EN

76.80.+y; 82.50.Kx; 82.80.Ej

Discipline

• 82.50.Kx: Processes caused by X-rays or γ-rays
• 82.80.Ej: X-ray, Mössbauer, and other γ-ray spectroscopic analysis methods
• 76.80.+y: Mössbauer effect; other γ-ray spectroscopy(see also 33.45.+x Mössbauer spectra—in atomic and molecular physics; for biophysical applications, see 87.64.kx; for chemical analysis applications, see 82.80.Ej)

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 2014
• Volume: 125
• Issue: 3
• Pages: 843-845

Dates

published

2014-03

Contributors

author

S. Stepanov

• Institute for Theoretical and Experimental Physics, B. Cheremushkinskaya 25, Moscow, Russia
• National Research Nuclear University "MEPhI", Kashirskoye shosse 31, Moscow, 115409, Russia

author

Yu. Perfil'ev

• Lomonosov's Moscow State University, Chemical Department, Leninskie Gory, Moscow, Russia

author

V. Byakov

• Institute for Theoretical and Experimental Physics, B. Cheremushkinskaya 25, Moscow, Russia
• Lomonosov's Moscow State University, Chemical Department, Leninskie Gory, Moscow, Russia
• D. Mendeleyev University of Chemical Technology of Russia, Miusskaya sq., 9, Moscow, Russia

author

L. Kulikov

• Lomonosov's Moscow State University, Chemical Department, Leninskie Gory, Moscow, Russia

References

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Identifiers

DOI

10.12693/APhysPolA.125.843