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Inelastic neutron scattering on the high frequency ultrasound in single crystals

  • E. Iolin*
  • , B. Farago
  • , F. Mezei
  • , E. Raitman
  • , L. Rusevich
  • *Corresponding author for this work
  • Institute of Physical Energetics
  • Institut Laue-Langevin
  • Helmholtz Centre Berlin for Materials and Energy

Research output: Contribution to journalConference articlepeer-review

1 Citation (Scopus)

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.

Original languageEnglish
Pages (from-to)406-411
Number of pages6
JournalProceedings of SPIE - The International Society for Optical Engineering
Volume3239
DOIs
Publication statusPublished - 1997
Externally publishedYes
EventPhoton Echo and Coherent Spectroscopy - Yoshkar-Ola, Russian Federation
Duration: 29 Jun 199729 Jun 1997

Keywords

  • Neutron inelastic scattering
  • Spin esho
  • Ultrasound

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