Structure of liquid carbon tetrachloride up to the subcritical point measured by wide Q-range neutron diffraction

被引:6
作者
Akatsuka, H
Misawa, M
Fukunaga, T
Mizutani, U
Furusaka, M
机构
[1] NIIGATA UNIV,FAC SCI,DEPT CHEM,NIIGATA 95021,JAPAN
[2] NATL LAB HIGH ENERGY PHYS,TSUKUBA,IBARAKI 980,JAPAN
关键词
D O I
10.1063/1.475051
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
Structure of liquid and gaseous CCl4 at elevated temperatures from 195 degrees C to the subcritical point 275 degrees C (T-c=285.15 degrees C) along the liquid-vapor coexistence curve have been studied by means of pulsed neutron diffraction. Structure factor in a wide range of momentum transfer Q from 0.03 to 20 Angstrom(-1), covering from the small angle scattering region to atomic-scale structure region, has been obtained. Long-range density fluctuation and atomic scale structure have been analyzed: (1) molecular orientational correlation still exists in Liquid CCl4 at 275 degrees C while it disappears in its saturated vapor; (2) correlation lengths of density fluctuation are 10-13 A for the liquid at 275 CC and 13-17 Angstrom for its saturated vapor: and (3) molecular-density fluctuation ([N-m(2)]-[N-m](2))/[N-m] is estimated to be 2.4 for the liquid at 275 degrees C and 9.3 for its saturated vapor. (C) 1997 American Institute of Physics.
引用
收藏
页码:3080 / 3084
页数:5
相关论文
共 23 条
[1]   STRUCTURE AND RESISTIVITY OF LIQUID METALS [J].
ASHCROFT, NW ;
LEKNER, J .
PHYSICAL REVIEW, 1966, 145 (01) :83-&
[2]   HOW WELL DO WE KNOW THE STRUCTURE OF SIMPLE MOLECULAR LIQUIDS - CCL4 REVISITED [J].
BERMEJO, FJ ;
ENCISO, E ;
ALONSO, J ;
GARCIA, N ;
HOWELLS, WS .
MOLECULAR PHYSICS, 1988, 64 (06) :1169-1184
[3]   ORIENTATIONAL CORRELATIONS IN MOLECULAR LIQUIDS BY NEUTRON SCATTERING - CARBON TETRACHLORIDE AND GERMANIUM TETRABROMIDE [J].
EGELSTAFF, PA ;
PAGE, DI ;
POWLES, JG .
MOLECULAR PHYSICS, 1971, 20 (05) :881-+
[4]   STRUCTURAL STUDIES OF TETRACHLORIDE LIQUIDS .3. MOLECULAR-STRUCTURE OF CCL4, SICL4, TICL4, GECL4 AND SNCL4 [J].
GRANADA, JR ;
STANTON, GW ;
CLARKE, JH ;
DORE, JC .
MOLECULAR PHYSICS, 1979, 37 (04) :1297-1304
[5]   DETERMINATION OF ELECTRON AND MOLECULAR RADIAL DISTRIBUTION FUNCTIONS FOR LIQUID CARBON TETRACHLORIDE BY X-RAY DIFFRACTION [J].
GRUEBEL, RW ;
CLAYTON, GT .
JOURNAL OF CHEMICAL PHYSICS, 1967, 46 (02) :639-&
[6]   ANGULAR CORRELATION EFFECTS IN NEUTRON-DIFFRACTION FROM MOLECULAR FLUIDS [J].
GUBBINS, KE ;
GRAY, CG ;
EGELSTAFF, PA ;
ANANTH, MS .
MOLECULAR PHYSICS, 1973, 25 (06) :1353-1375
[7]   STRUCTURE OF EXPANDED LIQUID CESIUM IN THE MODIFIED HYPERNETTED-CHAIN APPROXIMATION [J].
HOSHINO, K ;
MATSUDA, N ;
WATABE, M .
JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 1990, 59 (06) :2027-2035
[8]   THEORY OF INTERMOLECULAR PAIR CORRELATIONS FOR MOLECULAR LIQUIDS - APPLICATIONS TO LIQUIDS CARBON-TETRACHLORIDE, CARBON-DISULFIDE, CARBON DISELENIDE, AND BENZENE [J].
LOWDEN, LJ ;
CHANDLER, D .
JOURNAL OF CHEMICAL PHYSICS, 1974, 61 (12) :5228-5241
[9]   MOLECULAR-DYNAMICS CALCULATIONS FOR THE LIQUID AND CUBIC PLASTIC CRYSTAL PHASES OF CARBON-TETRACHLORIDE [J].
MCDONALD, IR ;
BOUNDS, DG ;
KLEIN, ML .
MOLECULAR PHYSICS, 1982, 45 (03) :521-542