A Study of Gamma-Ray Diffraction Caused by Thermal Diffuse Scattering in KCl Single Crystal Using the Mössbauer Effect

Moessbauer spectroscopy

“…In two recent papers of interest on the scattering at Bragg reflections, Ti et al (312) report their study on V3Sn and Kashiwase et al (153) theirs on KC1. In both of these papers the authors report they they have been able to place energy resolution between the elastic and inelastic scattering within 4 x 10'8 eV.…”

Geometrical aspects of thermal diffuse scattering and the associated γ-ray and X-ray Kikuchi effects near a Bragg reflexion

“…In practice, the zero point for the o~ scale on a NEAR A BRAGG REFLEXION diffractometer is ill defined, and consequently the value of A~o will be affected. Accordingly, values of Ao9 quoted by Kashiwase et al (1982a) should not be regarded as absolute, but rather as indicating that the condition Ao9 = 0 may be established empirically using the Kikuchi effect and other TDS features. For example, Ao9 in their Fig.…”

Neutron Kikuchi Effect: A New Method for Measuring Phonon Dispersion Curves

“…The effect was first observed by Kikuchi 1 for electrons and has come to be known as the Kikuchi (or K) effect (see, e.g., Cowley 2 for a recent discussion). The effect was observed much later with x rays, 3 ' 4 although its possibility was actually considered earlier by Friedrich, Knipping, and Laue when they were devising an experiment to exhibit x-ray diffraction (see p. 8,Ref. 5).…”

“…13), for which a suitably simple case is w p (<S=v 8 q, (8) where v s is the sound velocity. Substitution of (8) into (5) and use of (7) for q yields the following equation for the K loci in (A20, Aco) space:…”