ISSN:
1662-9779
Source:
Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
Topics:
Physics
Notes:
Directional Compton profiles of single crystal of hcp magnesium have been measuredwith scattering vectors along the [10 10], [1120] and [0001] directions in reciprocal space (specialdirections ΓΜ, ΓΚ, ΓΑ) using high-energy (662 keV) gamma radiation from a 137Cs isotope source.The experimental data were compared with corresponding theoretical Korringa-Kohn-Rostoker(KKR) calculations. The directional difference profiles, both experimental (of medium resolution)and theoretical ones, show very small anisotropy of the electron momentum density in magnesium,2-3 times lower than in zinc and cadmium single crystals, significantly lower than observed in cubicmetals. This small directional effect is in good agreement with Compton 60-keV energyexperiments and positron annihilation data presented by other authors
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/02/22/transtech_doi~10.4028%252Fwww.scientific.net%252FSSP.112.123.pdf