An effect of phonon on electron mean-free-path in ionic crystals

Electron inelastic-scattering mean-free-path (MFP) in ionic crystals has be en studied. A correction procedure has been considered which is related to the phonon and wave vector. The calculation shows that MFP is mainly domina ted by plasmon, and only at very low electron kinetics energy region, the p honon may play an obvious role on MFP. The rate of scattered electron from the plasmons is also much larger than that from the phonons. However, the p honon results in the rate of scattered electron with a sharper angular dist ribution in the forward direction. (C) 2000 Published by Elsevier Science L td.