Accession Number : AD0286458

Title :   IMAGE OF THE FERMI SURFACE IN LEAD

Corporate Author : ARMY MATERIALS RESEARCH AGENCY WATERTOWN MASS

Personal Author(s) : PASKIN,A. ; WEISS,R.J.

Report Date : SEP 1962

Pagination or Media Count : 1

Abstract : A search was made for the Kohn anomalies in Pb by measuring the thermal diffuse scattering of X-rays. Anomalies were found in accord with the neutron measurements of Brockhouse and coworkers (Brockhouse, B.N., Rao, K. R., and Woods, A.D.B., Phys. Re. Letters 3:93 (1961)). The anomalies are somewhat different from the free electron values. The anomalies only seem to be associated with longitudinal modes of vibration. The measurements were hindered by spurious diffraction peaks arising from an oxide surface or regions of polycrystallinity.

Descriptors :   *LEAD(METAL), *PHYSICS, *SURFACE PROPERTIES, CRYSTALS, OXIDES, PHONONS, SCATTERING, SURFACES, VIBRATION, X RAYS

Distribution Statement : APPROVED FOR PUBLIC RELEASE