Accession Number : AD0455710

Title :   LATTICE DYNAMICS OF TANTALUM,

Corporate Author : ATOMIC ENERGY OF CANADA LTD CHALK RIVER ONTARIO

Personal Author(s) : Woods, A. D. B.

Report Date : 22 MAY 1964

Pagination or Media Count : 3

Abstract : The frequency-wave-vector dispersion relation for lattice waves traveling in several symmetric directions of tantalum has been measured at 296 K, using methods of neutron inelastic scattering. The results show strong similarities with the previously measured values for niobium. The results can be fitted by a Born-von Karman force model only if very long-range forces are invoked. Because of the peculiar nature of the relation, the Debye approximation appears to be better for tantalum than for most other materials. (Author)

Descriptors :   (*TANTALUM, ATOMIC PROPERTIES), (*SINGLE CRYSTALS, VIBRATION), (*METAL CRYSTALS, TANTALUM), FREQUENCY, VECTOR ANALYSIS, CRYSTAL LATTICES, SYMMETRY(CRYSTALLOGRAPHY), SOLID STATE PHYSICS, NEUTRON SCATTERING, INELASTIC SCATTERING, FOURIER ANALYSIS.

Distribution Statement : APPROVED FOR PUBLIC RELEASE