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Título: | Inelastic collisions in para-H2: Translation-rotation state-to-state rate coefficients and cross sections at low temperature and energy |
Autor: | Maté, Belén CSIC ORCID; Thibault, Franck; Tejeda, Guzmán CSIC ORCID; Fernández Sánchez, José María CSIC ORCID ; Montero, Salvador CSIC ORCID | Palabras clave: | Molecule-molecule collisions Rotational-vibrational energy transfer Hydrogen neutral molecules Ground states |
Fecha de publicación: | 3-feb-2005 | Editor: | American Institute of Physics | Citación: | J. Chem. Phys. 122: 064313 (2005) | Resumen: | We report an experimental determination of the k(00-->02) rate coefficient for inelastic H2:H2 collisions in the temperature range from 2 to 110 K based on Raman spectroscopy data in supersonic expansions of para-H2. For this purpose a more accurate method for inverting the master equation of rotational populations is presented. The procedure permits us to reduce the measured k(00-->02) rate coefficient to the corresponding σ(00-->02) cross section in the range of precollisional energy from 360 to 600 cm–1. Numerical calculations of σ(00-->02) carried out in the frame of the coupled channel method are also reported for different intermolecular potentials of H2. A good agreement is found between the experimental cross section and the numerical one derived from Diep and Johnson's potential [J. Chem. Phys. 112, 4465 (2000)]. | Descripción: | 8 pages, 5 figures.-- PACS nrs.: 34.50 Ez. | Versión del editor: | http://dx.doi.org/10.1063/1.1850464 | URI: | http://hdl.handle.net/10261/8889 | DOI: | 10.1063/1.1850464 | ISSN: | 0021-9606 |
Aparece en las colecciones: | (CFMAC-IEM) Artículos |
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