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Uranium metal is the only element to exhibit a charge-density wave (CDW) distortion below 43 K. The CDW state was studied on a single-crystal under uniaxial stress with neutrons and with X-ray synchrotron radiation on X22C. The experimental results are compared with recent theoretical work on this distortion. In the case of the neutron experiments, Smith or ghost satellite intensities were observed as a function of the stress applied. In the case of the X-ray synchrotron radiation experiment on the same sample, a mosaic which was too great for high resolution experiments was discovered. The combination of the use of these complementary techniques is of interest because the sample's absorption coefficient depends strongly on the nature of the radiation. The sample investigated by synchrotron radiation scattering gives information near the real surface structure not detected by neutrons.

Additional information

Authors: MARMEGGI J C, Université J Fourier, CNRS Laboratoire de Cristallographie, Grenoble (FR);LANDER G H, JRC Karlsruhe (DE);GHERING P M, NSLS, Upton (US);GIBBS D, NSLS, Upton (US)
Bibliographic Reference: Paper presented: 23. Journées des Actinides, Bühlerhöhe (DE), April 20-23, 1993
Availability: Available from (1) as Paper EN 37666 ORA
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