Low-energy inelastic collisions of OH radicals with He atoms and D2 molecules

被引：45

作者：

Kirste, Moritz ^{[1
]}

Scharfenberg, Ludwig ^{[1
]}

Klos, Jacek ^{[2
]}

Lique, Francois ^{[3
]}

Alexander, Millard H. ^{[2
,4
]}

Meijer, Gerard ^{[1
]}

van de Meerakker, Sebastiaan Y. T. ^{[1
]}

机构：

[1] Max Planck Gesell, Fritz Haber Inst, D-14195 Berlin, Germany

[2] Univ Maryland, Dept Chem & Biochem, College Pk, MD 20742 USA

[3] Univ Havre, LOMC, Le Havre, France

[4] Univ Maryland, Inst Phys Sci & Technol, College Pk, MD 20742 USA

来源：

PHYSICAL REVIEW A | 2010年 / 82卷 / 04期

基金：

美国国家科学基金会;

关键词：

ROTATIONAL-EXCITATION; CROSS-SECTIONS; SCATTERING; STATE; PROPENSITIES; PI;

D O I：

10.1103/PhysRevA.82.042717

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We present an experimental study on the rotational inelastic scattering of OH (X-2 Pi(3/2), J = 3/2, f) radicals with He and D-2 at collision energies between 100 and 500 cm(-1) in a crossed beam experiment. The OH radicals are state selected and velocity tuned using a Stark decelerator. Relative parity-resolved state-to-state inelastic scattering cross sections are accurately determined. These experiments complement recent low-energy collision studies between trapped OH radicals and beams of He and D-2 that are sensitive to the total (elastic and inelastic) cross sections [ Sawyer et al., Phys. Rev. Lett. 101, 203203 (2008)], but for which the measured cross sections could not be reproduced by theoretical calculations [Pavlovic et al., J. Phys. Chem. A113, 14670 (2009)]. For the OH-He system, our experiments validate the inelastic cross sections determined from rigorous quantum calculations.

引用

页数：7

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