Pressure broadening of NH3 by H2 from 15 to 40 K

被引：9

作者：

Willey, DR ^{[1
]}

Timlin, RE ^{[1
]}

Deramo, M ^{[1
]}

Pondillo, PL ^{[1
]}

Wesolek, DM ^{[1
]}

Wig, RW ^{[1
]}

机构：

[1] Allegheny Coll, Dept Phys, Meadville, PA 16335 USA

来源：

JOURNAL OF CHEMICAL PHYSICS | 2000年 / 113卷 / 02期

关键词：

D O I：

10.1063/1.481836

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：

Pressure broadening of the (J,K) = (1,1), (2,2), and (3,3) inversion transitions of NH3 was measured using normal- H-2 as the broadening agent at kinetic temperatures of 15 to 40 K. Measurements were taken in a quasiequilibrium cell using the collisional cooling technique. H-2 pressure broadening cross sections were compared to low-temperature He pressure broadening of the same transitions and found to be from 2.5 to 8 times larger than corresponding He cross sections. Measured normal- H-2 and He cross sections were also compared to calculated J = 0, para-H-2 cross sections. (C) 2000 American Institute of Physics. [S0021-9606(00)02126-7].

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页码：611 / 615

页数：5

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