Cs(6D3/2)+H2→CsH+H reaction. IV. Rotationally resolved total cross sections

Autor:	G. Rahmat, V. Cavero, R. Vetter, J.‐M. L’Hermite
Rok vydání:	1999
Předmět:	Cross section (physics) Photoluminescence chemistry Scattering Caesium General Physics and Astronomy chemistry.chemical_element Physical and Theoretical Chemistry Atomic physics Fluorescence Excitation Order of magnitude Product distribution
Zdroj:	The Journal of Chemical Physics. 110:3428-3436
ISSN:	1089-7690 0021-9606
Popis:	The Cs(6D3/2)+H2→CsH [X 1Σ+(v″=0,1; J″)]+H photochemical reaction has been studied in a crossed-beam experiment with electronic excitation of Cs atoms and laser-induced fluorescence detection of CsH products. The reactive cross section is measured at a collision energy of 0.09 eV: σ(6D3/2)=0.04×10−16 cm2. The rotational distributions of CsH products measured on v″=0 for 0⩽J″⩽23 and on v″=1 for 0⩽J″⩽15 are close to statistical ones with 16% of products in v″=1. A quasi-classical 3D trajectory calculation of this reaction yields both rotational and vibrational distributions of CsH products and their angular scattering probability. The reactive cross section measured with Cs(6D3/2) excitation is an order of magnitude smaller than the cross section σ(7P1/2)=0.6×10−16 cm2, which is re-evaluated in this article.
Databáze:	OpenAIRE
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