Lifetimes of high frequency phonons

Lax, M. ; Narayanamurti, V. ; Hut, P. ; Weber, W. (1981) Lifetimes of high frequency phonons Journal de Physique. Colloques, 42 (C6). C6_161 - C6_163. ISSN 0449-1947

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We discuss the inhibition of anharmonic spontaneous multiphonon decay by energy-momentum conservation and the reduction of isotope scattering by the sharing of ionic motion to permit a frequency window for long-lived transverse acoustic phonons.

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