Application of Structural Phase Transitions in X-Ray Spectroscopy

Article type: Research Article

Authors: Geppert, U.

Affiliations: Max-Planck-Institut für extraterrestrische Physik, Aussenstelle Berlin, Rudower Chaussee 5, D-12489 Berlin, Germany

Note: [] E-mail address: ug@mpe.fta-berlin.de

Abstract: A method is proposed for measuring different energy ranges of x-ray radiation with the same spectrometer crystal employing structural phase transitions. When the crystal temperature is varied beyond the phase transition temperature, the crystal symmetry is altered predictably and reversibly. Thus, with no change in the angle of glancing incidence, the x-ray beam hits in different crystal phases different lattice planes which correspond to different energy ranges. The advantage is that neither large motions nor exchanging the spectrometer crystal is necessary during observations.

DOI: 10.3233/XST-1993-4305

Journal: Journal of X-Ray Science and Technology, vol. 4, no. 3, pp. 217-220, 1994