TITLE:
Theoretical Review of Mössbauer Effect, Hyperfine Interactions Parameters and the Valence Fluctuations in Eu Systems
AUTHORS:
Mahmoud Abdelrazek Ahmida
KEYWORDS:
Mössbauer Spectroscopy, Resonant Absorption, Recoil-Free Fraction, 151Eu Mössbauer Isotope, Hyperfine Interactions, Valence Fluctuations
JOURNAL NAME:
Journal of Applied Mathematics and Physics,
Vol.7 No.1,
January
31,
2019
ABSTRACT: In this paper, an overview of the
theory of Mössbauer effect is covered, and the main hyperfine interactions
parameters which affect the shape of the resultant Mössbauer spectrum are
explained and illustrated as well. In principle, Mössbauer effect applies to
any and all nuclides, but in practice, certain ideal properties are desirable;
that is, the conditions for recoil-free emission and absorption of gamma rays
must be optimized. Therefore, briefly discussed in this review, one of the most commonly used for practical and fundamental studies the 151Eu
Mössbauer isotope. Also, the intermediate valence phenomena and their
theoretical treatments are briefly discussed.