Direct measurement of rotationally inelastic cross sections at astrophysical and quantum collisional temperatures

被引：27

作者：

Ball, CD ^{[1
]}

De Lucia, FC ^{[1
]}

机构：

[1] Ohio State Univ, Dept Phys, Columbus, OH 43210 USA

来源：

PHYSICAL REVIEW LETTERS | 1998年 / 81卷 / 02期

关键词：

D O I：

10.1103/PhysRevLett.81.305

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The first measurements of rotationally inelastic collision cross sections over the 1-40 K temperature range characteristic of much of the interstellar medium are reported. Measurements of the 1(1,0)-1(0,1) transition of H2S in collision with He are based on a collisional cooling methodology, which allows the direct observation of collision processes at temperatures far below the limits ordinarily imposed by vapor pressure. These cross sections are also of fundamental interest because resonant formation of quasibound complexes mediates rotational energy transfer at low collision energy. [S0031-9007(98)06538-7].

引用

页码：305 / 308

页数：4

共 20 条

[11] Total and state-to-state rate coefficients for rotational energy transfer in collisions between NO(Chi(2)Pi) and He at temperatures down to 15 K [J].