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Proceedings Paper

Inelastic neutron scattering on the high-frequency ultrasound in single crystals
Author(s): Eugene M. Iolin; B. Farago; Ferenc Mezei; E. Raitman; L. Rusevich
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Paper 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.

Paper Details

Date Published: 26 September 1997
PDF: 6 pages
Proc. SPIE 3239, Photon Echo and Coherent Spectroscopy, (26 September 1997); doi: 10.1117/12.287712
Show Author Affiliations
Eugene M. Iolin, Institute of Physical Energetics (Latvia)
B. Farago, Institute Laue-Langevin (France)
Ferenc Mezei, Hahn-Meitner Institute (Germany)
E. Raitman, Institute of Physical Energetics (Latvia)
L. Rusevich, Institute of Physical Energetics (Latvia)


Published in SPIE Proceedings Vol. 3239:
Photon Echo and Coherent Spectroscopy
Vitaly V. Samartsev, Editor(s)

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