| NUKLEONIKA 2013, 58(1):203-206
UNIQUENESS OF STUDIES ON ELECTRON DENSITIES IN THE EXTENDED MOMENTUM SPACEGrażyna 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 This work draws attention to the fact that by measuring electronic structure via angular correlation of positron radiation (ACAR) and Compton scattering experiments one probes electron densities in the extended momentum space, directly related to the electron Bloch wave functions. Presenting some examples of electron densities in the extended and reduced momentum spaces, it is demonstrated what kind of information concerning the electronic structure can be obtained depending on the considered space. It is also shown how the knowledge of the symmetry selection rules allows to separate various Fermi surfaces and establish Fermi momenta. Close X |