INTER-MOLECULAR POTENTIALS FOR AR+CF4 AND AR+SF6 FROM DIFFERENTIAL CROSS-SECTIONS

被引：6

作者：

PORTER, A

GROSSER, AE

机构：

[1] Department of Chemistry, McGill University, Montreal, H3A 2K6

来源：

MOLECULAR PHYSICS | 1979年 / 38卷 / 02期

关键词：

D O I：

10.1080/00268977900101921

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：

Differential scattering cross-sections were measured for the systems, Ar + CF4 and Ar+SF6, by crossed molecular beam techniques. A velocity- selected, modulated primary beam (CF4 or SF6) is crossed by a supersonic argon beam. The scattered primary beam is detected, as a function of scattering angle, by a quadrupole mass spectrometer in an ultra-high vacuum chamber. The angular distributions show a well resolved rainbow pattern with additional oscillatory structure. They were compared with differential cross-sections calculated from Lennard-Jones (12, 6) trial potentials to determine the potential parameters. The optimum values for these were found to be:£= 23 5(± 7) K., re = 0-38(± 0-02) nm for Ar + CF4, and e = 351 (± 10) K, re = 0-45(± 0-02) nm for Ar + SF6. © 1979 Taylor & Francis Group, LLC.

引用

页码：611 / 616

页数：6

共 41 条

[1] SCATTERING OF POTASSIUM BY A SERIES OF REACTIVE AND NONREACTIVE COMPOUNDS IN CROSSED MOLECULAR BEAMS [J].