Rayleigh Scattering of Mössbauer Radiation Method Used in Dynamics Studies of Condensed Matter
S.E. Enescua and I. Bibicub
a"Horia Hulubei" National Institute for Physics and Nuclear Engineering IFIN-HH, P.O. Box MG-6, 76900 Bucharest-Magurele, Romania
bNational Institute for Material Physics, P.O. Box MG-7, 76900 Bucharest-Magurele, Romania
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Received: 02 11 2004;
The Rayleigh scattering of the Mössbauer radiation is a less common technique used in the study of the properties of condensed matter. The detection of the scattered radiation via the nuclear resonance absorption, with an energy resolution of the order of 10-8 eV makes this technique very sensitive to dynamics changes. The results of our studies by the Rayleigh scattering of the Mössbauer radiation on pyrolytic graphite (C) and rubidium tetrachlorozincate (Rb2ZnCl4) are reported. The contribution of the coherent inelastic scattering to the total intensity in C(002) is presented like a consequence of the coupling motions of C atoms in the hexagonal plane. The normal-incommensurate phase transition in Rb2ZnCl4 is discussed in connection with the photon-phonon interaction.
DOI: 10.12693/APhysPolA.107.479
PACS numbers: 33.45.+x, 64.60.-i, 64.70.Rh