New Advances in the Study of Local Structure of Molten Binary Salts
- 20 January 1997
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 78 (3) , 460-463
- https://doi.org/10.1103/physrevlett.78.460
Abstract
Accurate extended x-ray absorption fine structure measurements of molten RbBr and CuBr are analyzed and compared with computer simulations and neutron diffraction results. Advanced multiple-edge ab initio methods are used for data analysis. The short-range cation-anion pair distribution function of liquid RbBr is found to be in agreement with previous molecular dynamic simulations confirming the accuracy of present theoretical models. In liquid CuBr, due to the exceptional short-range sensitivity, direct evidence for nearly covalent bonding is obtained, improving previous neutron diffraction determinations. Possible important consequences of present results for experimental studies of binary liquid systems are addressed.Keywords
This publication has 18 references indexed in Scilit:
- Multiple-edge EXAFS refinement: Short-range structure in liquid and crystalline SnPhysical Review B, 1996
- The radial distribution function probed by X-ray absorption spectroscopyJournal of Physics: Condensed Matter, 1994
- Hyperfine populations prior to muon capturePhysical Review A, 1993
- Double-electron excitation channels at the BrKedge of HBr andPhysical Review A, 1993
- A measurement of the structure of the superionic conductor copper(I) bromide in its liquid phase by neutron diffractionJournal of Physics: Condensed Matter, 1992
- Multielectron x-ray photoexcitation observations in x-ray-absorption fine-structure backgroundPhysical Review Letters, 1992
- Towards an understanding of the structure of molten copper chlorideJournal of Physics C: Solid State Physics, 1987
- Structure and dynamics of molten saltsReports on Progress in Physics, 1986
- Comments on the structure of molten saltsJournal of Physics C: Solid State Physics, 1982
- Density fluctuations in molten salts. II. Molecular dynamics study of liquid RbBrPhysical Review A, 1976