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JOURNALS // Pis'ma v Zhurnal Èksperimental'noi i Teoreticheskoi Fiziki // Archive

Pis'ma v Zh. Èksper. Teoret. Fiz., 2010 Volume 91, Issue 4, Pages 204–209 (Mi jetpl656)

This article is cited in 5 papers

CONDENSED MATTER

Direct observation of anomalous Kossel lines

M. A. Chueva, M. V. Koval'chukb, V. V. Kvardakovb, P. G. Medvedeva, È. M. Pashaevb, I. A. Subbotinb, S. S. Yakuninb

a Insitute of Physics and Technology, Russian Academy of Sciences
b Russian Research Centre "Kurchatov Institute"

Abstract: Anomalous Kossel lines corresponding to the yield of X rays from a germanium crystal under the conditions of strongly asymmetric diffraction have been observed in the simplest experimental scheme with the use of characteristic Mo K α radiation and a germanium crystal analyzer. In agreement with the results of a previous theoretical analysis, such lines are narrow collimated beams of radiation in the form of a ridge in a narrow angular range near a given direction whose intensity is one or two orders of magnitude higher than the background with a divergence of about several seconds of arc in the diffraction plane and of about 10′ along the Kossel line. The possible applications of this effect, in particular, for solving the problems of X-ray holography, are discussed.

Received: 15.01.2010


 English version:
Journal of Experimental and Theoretical Physics Letters, 2010, 91:4, 191–195

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