SMALL-ANGLE NEUTRON-SCATTERING STUDIES OF DILUTE SUPERCRITICAL SOLUTIONS .1. PURE SUPERCRITICAL NEON

被引:23
作者
LONDONO, JD
SHAH, VM
WIGNALL, GD
COCHRAN, HD
BIENKOWSKI, PR
机构
[1] OAK RIDGE NATL LAB, DIV SOLID STATE, OAK RIDGE, TN 37831 USA
[2] OAK RIDGE NATL LAB, DIV CHEM TECHNOL, OAK RIDGE, TN 37831 USA
关键词
D O I
10.1063/1.465770
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
Small angle neutron scattering (SANS) results are presented for states of neon close to the critical isochore and supercritical temperatures between 47 and 60 K. The net intensities were converted to absolute units of differential cross section per unit sample volume by comparison with precalibrated secondary standards. The values of the differential cross section at zero scattering vector are in excellent agreement with values calculated from an equation of state. Evidence of three-body forces in these data are compared to that present in Krypton data reported earlier. It is concluded that small angle experiments of the sort reported here should be repeated for the heavier noble gases, for which effects from three-body forces are anticipated to be larger.
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收藏
页码:466 / 470
页数:5
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