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Mössbauer effect studies of 9.3 keV transition in solid krypton

✍ Scribed by K. Mahesh; N. D. Sharma

Publisher
John Wiley and Sons
Year
1971
Tongue
English
Weight
275 KB
Volume
44
Category
Article
ISSN
0370-1972

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✦ Synopsis

Abstract

Cubic structure calculations for the temperature dependence study of the recoilless fraction and the Mössbauer energy shift of Kr^83m^−9,3 keV transition are made using the quasiharmonic rigid‐atom model of the Kr‐lattice vibrations which includes the fourth nearest neighbour central force interactions. The results are compared with the experiment and the Debye model of the phonon spectra. The possibility of the low frequency Kr‐spectra not being Debye‐like is considered and the effect of the lattice anharmonicity is negligible. The characteristic temperature θ~M~ (0 °K) of the solid Kr is found to be 25 °K which is in agreement with the experiments.

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✍ U. Atzmony; E.R. Bauminger; S. Ofer 📂 Article 📅 1966 🏛 Elsevier Science ⚖ 553 KB

The recoilless absorption spectra of the 58 keV ;~-rays from 159mTb in Z59Tb situated m Tb~O~, TbA12, Tb metal and TbFe 2 have been measured at temperatures ranging from 20 ° K to room temperature. The sources used were 159Dy and 159Gd in oxide form. All absorbers gave unsplit absorption lines. From