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The transition from zero- to first-sound phonon propagation in lead at high temperatures

MacDonald, John Emyr, Saunders, G. A. and Clausen, K. N. 1988. The transition from zero- to first-sound phonon propagation in lead at high temperatures. Journal of Physics C: Solid State Physics 21 (1) , L1. 10.1088/0022-3719/21/1/001

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Abstract

Wavevector dependences of the transverse phonon energy widths, determined by neutron scattering, in monocrystalline lead provide evidence for a transition from a zero-sound, collision-free mode of high-frequency phonon propagation to a first-sound, collision-dominated regime at about 500 to 550 K. Hence the propagation of phonons having wavelengths on the scale of the interatomic spacing is heavily damped, similarly to that in the liquid state, prior to melting.

Item Type: Article
Date Type: Publication
Status: Published
Schools: Physics and Astronomy
Subjects: Q Science > QC Physics
Publisher: IOP Publishing
ISSN: 0022-3719
Last Modified: 04 Jun 2017 04:53
URI: http://orca.cf.ac.uk/id/eprint/46154

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Cited 2 times in Web of Science. View in Web of Science.

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