EXPERIMENTAL WAYS OF STUDY OF ATOMIC MOTION IN OXIDES OF TRANSITION METALS. D. A. Kovtun^*, A. P. Kovtun^**, V. P. Krasnolutskiy^*, M. F. Kupriyanov^**, A. P. Naumov^*, ^*Institute of Physics, Rostov State University, 194 Stachki St., 344090, Rostov-on-Don, Russia, ^**Department of Physics, Rostov State University, 5 Zorge St., 344104, Rostov-on-Don, Russia

The influence of different atomic space distribution on X-ray diffraction pattern is shown. According to Guinier's concept [1] and some arguments briefly given in the work it is assumed that chemical state in oxide of transition metals is structurally and energetically degenerate and can be presented as a quantum superposition of a set of mutually orthogonal elementary "dipole" states localized inside first coordinate sphere of metal atom. In each such state the metal atom is shifted with respect to the center of octahedron (approx. 0.05-0.15 Å). Due to small sizes of the so called "white" spot the radiation sources must emit monochromatic X-rays with the short wavelengths (E_ph > 100 keV).

We have analyzed two suitable radiation sources:

* the radiation of isotopes

* synchrotron radiation

The problems and ways of elastic photon registration are also discussed taking into consideration secondary radiation.

1. Comes R., Lambert M., Guinier A., Commun. Solid St. Phys., Vol. 6, p. 715 (1968)