A DIFFRACTION STUDY OF THE STRUCTURE OF LIQUID POTASSIUM NEAR FREEZING AND DENSITY-FUNCTIONAL THEORY OF PAIR POTENTIALS

Authors
JOHNSON MW MARCH NH PERROT F RAY AK
Citation
Mw. Johnson et al., A DIFFRACTION STUDY OF THE STRUCTURE OF LIQUID POTASSIUM NEAR FREEZING AND DENSITY-FUNCTIONAL THEORY OF PAIR POTENTIALS, Philosophical magazine. B. Physics of condensed matter. Structural, electronic, optical and magnetic properties, 69(5), 1994, pp. 965-977
Citations number
13
Categorie Soggetti
Physics, Applied
Journal title
Philosophical magazine. B. Physics of condensed matter. Structural, electronic, optical and magnetic properties → ACNP
ISSN journal
09586644
Volume
69
Issue
5
Year of publication
1994
Pages
965 - 977
Database
ISI
SICI code
0958-6644(1994)69:5<965:ADSOTS>2.0.ZU;2-4
Abstract
New results will be reported from a neutron diffraction experiment to measure the liquid structure factor S(Q) of potassium metal just above its freezing point. This experiment will then be analysed in relation to (a) the X-ray measurements of Greenfield, Wellendorf and Wiser, an d (b) a density functional calculation of a potassium potential. With respect to (a) the possible sources of experimental error will be exam ined and the confidence limits on the difference S(n)(Q)-S(X)(Q) evalu ated. Conclusions about electron correlation in liquid potassium will also be drawn. The pair potential calculated with respect to (b) will finally be discussed in relation to liquid structure theories of S(Q).