The Instrument In FLAX For Very High Energy Resolution And First Direct Measurements Of Phonon Dispersion Curves With X-Rays

E. Burkel

doi:10.1117/12.961858

27 November 1989 The Instrument In FLAX For Very High Energy Resolution And First Direct Measurements Of Phonon Dispersion Curves With X-Rays

E. Burkel

Author Affiliations +

Proceedings Volume 1140, X-Ray Instrumentation in Medicine and Biology, Plasma Physics, Astrophysics, and Synchrotron Radiation; (1989) https://doi.org/10.1117/12.961858
Event: 1989 International Congress on Optical Science and Engineering, 1989, Paris, France

Abstract

Very high energy resolution of x-rays can be achieved by extreme ba,ckreflection ( Bragg angle close to 90° ) from perfect crystals. This technique is used for the instrument INELAX, recently installed at the storage ring of HASYLAB, Hamburg. Inelastic scattering of 13.8 keV x-rays can be performed with the high energy resolution of ΔΕ= (17 ± 2) me.V. First direct measurements of phonon dispersion curves with x-rays were carried out using single crystals of Be and a diamond. The longitudinal phonons were observed in the acoustic and optical range.

Citation Download Citation

E. Burkel "The Instrument In FLAX For Very High Energy Resolution And First Direct Measurements Of Phonon Dispersion Curves With X-Rays", Proc. SPIE 1140, X-Ray Instrumentation in Medicine and Biology, Plasma Physics, Astrophysics, and Synchrotron Radiation, (27 November 1989); https://doi.org/10.1117/12.961858

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