Accession Number : AD0705668
Title : INFLUENCE OF APPLIED STRESS AND DEFECT ATOMS ON THE ATOMIC VIBRATIONS IN SOLIDS AND LIQUIDS.
Descriptive Note : Final scientific rept. 1 Oct 68-30 Sep 69,
Corporate Author : OESTERREICHISCHE STUDIENGESELLSCHAFT FUER ATOMENERGIE G M B H VIENNA DEPT OF PHYSICS
Personal Author(s) : Weinzierl,P.
Report Date : 04 FEB 1970
Pagination or Media Count : 34
Abstract : A sodium single crystal sample was tested, adopted to the scattering chamber and a series of systematic exploratory measurements has been done with the aim to find favourable conditions for the subsequent pressure-induced phonon frequency shift measurements. An improved control system for the triple-axis spectrometer driven by paper tape has been completed and put in operation. A calculation on the surface vibrations in crystal using an improved force constant model and some unusual methods was done resulting in a values of Debye-Waller factors and of dispersion relations for surface modes in small crystals. (Author)
Descriptors : (*SODIUM, *NUCLEAR RADIATION SPECTROSCOPY), PHONONS, SCATTERING, CRYSTAL DEFECTS, AUSTRIA
Subject Categories : Crystallography
Solid State Physics
Distribution Statement : APPROVED FOR PUBLIC RELEASE