Valence states of 57Fe decayed from 57Mn implanted into KMnO4 |
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| Authors: | Y Kobayashi M. K. Kubo Y. Yamada T. Saito H. Ueno H. Ogawa W. Sato K. Yoneda H. Watanabe N. Imai H. Miyoshi K. Asahi |
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| Affiliation: | (1) Applied Nuclear Physics Laboratory, RIKEN, Hirosawa, Wako, Saitama, 351 0198, Japan;(2) Department of Chemistry, School of Science, The University of Tokyo, Bunkyo, Tokyo, 113-0033, Japan;(3) Department of Chemistry, Science University of Tokyo, Shinjuku, Tokyo, 162-8601, Japan;(4) School of Science and Technology, Meiji University Tama-ku, Kawasaki, Kanagawa Prefecture, 214-8571, Japan |
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| Abstract: | ![]()
In-beam Mössbauer spectra of 57Fe, decayed from short-lived 57Mn (T1/2 = 1.45 min) implanted into potassium permanganate, KMnO4, were measured at temperatures between 11 K and 130 K. This is the first application of a secondary RI beam to the study of valence states after nuclear transformation. The in-beam Mössbauer spectra obtained below 90 K could be analyzed with two components, a doublet and a singlet. From the calculations of the molecular orbital wave functions, the singlet is suggested to be substitutional 57Fe atoms for Mn-sites in tetrahedral [MnO4]– with an unusually high valence state of Fe8+. |
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