Inelastic neutron scattering on the high-frequency ultrasound in single crystals

Eugene M. Iolin; B. Farago; Ferenc Mezei; E. Raitman; L. Rusevich

doi:10.1117/12.287712

26 September 1997 Inelastic neutron scattering on the high-frequency ultrasound in single crystals

Eugene M. Iolin, B. Farago, Ferenc Mezei, E. Raitman, L. Rusevich

Proceedings Volume 3239, Photon Echo and Coherent Spectroscopy; (1997) https://doi.org/10.1117/12.287712
Event: PECS '97: Photon Echo and Coherent Spectroscopy, 1997, Yoshkar-Ola, Russian Federation

Abstract

Neutron scattering from ultrasonic waves in silicon and KBr single crystals was studied. By the use of neutron spin echo spectroscopy we have observed ultrasonic phonons for the first time by inelastic neutron scattering. One, double and zero phonon scattering were observed in Si. The intensity of the last scattering was almost independent from the acoustic wave amplitude. These results are in a good agreement with dynamic theory calculations. The results obtained in KBr are consistent with a model that each mosaic bloc oscillates as a whole. Our approach lends itself for the investigation of ultrasonic waves in wide varieties of substances.

Citation Download Citation

Eugene M. Iolin, B. Farago, Ferenc Mezei, E. Raitman, and L. Rusevich "Inelastic neutron scattering on the high-frequency ultrasound in single crystals", Proc. SPIE 3239, Photon Echo and Coherent Spectroscopy, (26 September 1997); https://doi.org/10.1117/12.287712

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