x-ray, liquids, scattering curves, radial distribution, melting curve
A technique using the tetrahedral anvil high-pressure x-ray system has been developed to extract coherent x-ray intensity patterns of liquids near melting from measured scattering curves in the presence of high-background counts. Radial distribution functions for liquids along the melting curve to pressures of at least 50 kbar can be obtained. At each pressure scattering curves are recorded for the liquid and solid on opposite sides of the melting curve and a subtraction is made to eliminate background and incoherent scattering. Theoretical estimates of the thermal diffuse scattering from the solid are added to the appropriately corrected difference patterns to yield the coherent intensity patterns for the liquid. The technique is directed to the measurement of pressure-induced changes rather than absolute measurement of the intensity patterns and the radial distribution functions
Original Publication Citation
Brown, Keith H. and Dean J. Barnett."X-Ray Diffraction Studies on Liquids at Very High Pressures along the Melting Curve. I. Methods and Techniques." The Journal of Chemical Physics 57 (1972): 29-215.
BYU ScholarsArchive Citation
Brown, Keith H. and Barnett, J. Dean, "X-Ray Diffraction Studies on Liquids at Very High Pressures along the Melting Curve. I. Methods and Techniques" (1972). All Faculty Publications. 789.
Physical and Mathematical Sciences
Physics and Astronomy
© 1972 American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics. The following article appeared in The Journal of Chemical Physics and may be found at http://link.aip.org/link/?JCPSA6/57/2009/1
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