Experimental phonon frequencies and widths of lead at 5, 80, and 290 °K

Abstract

AbstractThe phonon frequencies and lifetimes of lead have been measured in a (110) plane at 5, 80, and 290 °K using the neutron inelastic scattering technique. The importance of special conditions required to minimize the experimental error is pointed out. The phonon lifetimes do not show anomalies which could be presumed in consequence of the strong phonon‐electron interaction in lead. The phonon widths and frequency shifts have been analysed on the basis of anharmonic effects taking account of phonon‐phonon and phonon‐electron scattering processes.