| NUKLEONIKA 2013, 58(1):207-210
UTILIZATION OF SYMMETRY OF SOLIDS IN SOME EXPERIMENTSGrażyna Kontrym-Sznajd W. Trzebiatowski Institute of Low Temperature and Structure Research, Polish Academy of Sciences, 2 Okólna Str., P. O. Box 1410, 50-950 Wrocław 2, Poland It is known that some anisotropic quantities, that describe the properties of solids, can be determined, to a reasonable accuracy, by a limited number of data along the “special directions” (SD). SDs are very useful in various theoretical and experimental investigations. Among other things, they define projections which are the most efficient to reconstruct three-dimensional (3-D) electron momentum densities from Compton scattering spectra. The concept of SDs and their power is illustrated by comparing an isotropic average of the function based on either three high-symmetry directions or even only one, but SD. Close X |