Accession Number : AD0261731

Title :   AN X-RAY DIFFRACTION STUDY OF LIQUID STRUCTURE

Corporate Author : STANFORD UNIV CALIF

Personal Author(s) : PAALMAN,H.H. ; PINGS,C.J.

Report Date : JUN 1961

Pagination or Media Count : 1

Abstract : A comprehensive program is presented for the study of liquid-state structure. Through the application of X-ray diffraction techniques, the pair distribution function may be obtained for a given state of a liquid system. This information is basic to the theoretical treatment of liquids by s atistical mechanical methods. Experimental apparatus was fabricated for carrying on diffraction experiments over an extensive range of pressure and temperature. A cylindrical beryllium cell, capable of withstanding several hundred psi, was used. The components were designed for the study of condensed low atomic weight elements at cryogenic temperatures. Control systems maintained the desired pressure and temperature within 0.5 psi and 0.2 C respectively. he theory for the interpretation of liquid diffraction data was critically reviewed. A synthesis of the important recent developments is presented in a general analytical scheme. Liquid nitrogen was studied at 100 psia and -193.5 C. The results compared favorably with earlier work r ported in the literature. (Author)

Descriptors :   *LIQUIDS, *MOLECULES, *NITROGEN, *X RAY DIFFRACTION, CRYOGENICS, MOLECULAR ASSOCIATION, MOLECULAR SPECTROSCOPY, STATISTICAL ANALYSIS, THERMODYNAMICS, X RAYS

Distribution Statement : APPROVED FOR PUBLIC RELEASE