Experimental and theoretical determination of rotational-translational state-to-state rate constants for N2:He collisions at low temperature (3<T<20 K)

10 pages, 7 figures.-- PACS nr.: 34.50.Fa.

Detalhes bibliográficos
Autores: Maté, Belén, Thibault, Franck, Ramos, Ángel, Tejeda, Guzmán, Fernández Sánchez, José María, Montero, Salvador
Formato: artículo
Fecha de publicación:2003
País:España
Recursos:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/8948
Acesso em linha:http://hdl.handle.net/10261/8948
Access Level:acceso abierto
Palavra-chave:Nitrogen
Vibrational states
Ground states
Helium neutral atoms
Atom-molecule collisions
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spelling Experimental and theoretical determination of rotational-translational state-to-state rate constants for N2:He collisions at low temperature (3<T<20 K)Maté, BelénThibault, FranckRamos, ÁngelTejeda, GuzmánFernández Sánchez, José MaríaMontero, SalvadorNitrogenVibrational statesGround statesHelium neutral atomsAtom-molecule collisions10 pages, 7 figures.-- PACS nr.: 34.50.Fa.We present an experimental determination of state-to-state rotational–translational (RT) rate constants of N2:He collisions in the vibrational ground state as a function of temperature in the range 3<T<20 K. Raman spectroscopy in supersonic expansions of N2/He mixtures is used to determine the primary data that, together with the N2:N2 state-to-state RT rates previously determined [Ramos et al., Phys. Rev. A 66, 022702 (2002)], are needed to solve the master equation according to a procedure that does not impose any particular scaling law. We also report first principle calculations of the N2:He state-to-state RT rate constants performed using the full three-dimensional potential energy surface of Reid et al. [J. Chem. Phys. 107, 2329 (1997)], in the 3<T<300 K temperature range. The coupled-channel method, and the coupled-states approximation, were applied in the low (0–610 cm–1) and in the high (610–1500 cm–1) energy limits, respectively. A good agreement between theoretical and experimental results is found in the temperature range where comparison is possible.Thanks are due to the Spanish MCYT for financial support of the experimental part of this work (Research Project No. BFM2001-2276).Peer reviewedAmerican Institute of Physics200820082003info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501153905 bytesapplication/pdfhttp://hdl.handle.net/10261/8948reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)Ingléshttp://dx.doi.org/10.1063/1.1543945info:eu-repo/semantics/openAccessoai:digital.csic.es:10261/89482026-05-22T06:33:51Z
dc.title.none.fl_str_mv Experimental and theoretical determination of rotational-translational state-to-state rate constants for N2:He collisions at low temperature (3<T<20 K)
title Experimental and theoretical determination of rotational-translational state-to-state rate constants for N2:He collisions at low temperature (3<T<20 K)
spellingShingle Experimental and theoretical determination of rotational-translational state-to-state rate constants for N2:He collisions at low temperature (3<T<20 K)
Maté, Belén
Nitrogen
Vibrational states
Ground states
Helium neutral atoms
Atom-molecule collisions
title_short Experimental and theoretical determination of rotational-translational state-to-state rate constants for N2:He collisions at low temperature (3<T<20 K)
title_full Experimental and theoretical determination of rotational-translational state-to-state rate constants for N2:He collisions at low temperature (3<T<20 K)
title_fullStr Experimental and theoretical determination of rotational-translational state-to-state rate constants for N2:He collisions at low temperature (3<T<20 K)
title_full_unstemmed Experimental and theoretical determination of rotational-translational state-to-state rate constants for N2:He collisions at low temperature (3<T<20 K)
title_sort Experimental and theoretical determination of rotational-translational state-to-state rate constants for N2:He collisions at low temperature (3<T<20 K)
dc.creator.none.fl_str_mv Maté, Belén
Thibault, Franck
Ramos, Ángel
Tejeda, Guzmán
Fernández Sánchez, José María
Montero, Salvador
author Maté, Belén
author_facet Maté, Belén
Thibault, Franck
Ramos, Ángel
Tejeda, Guzmán
Fernández Sánchez, José María
Montero, Salvador
author_role author
author2 Thibault, Franck
Ramos, Ángel
Tejeda, Guzmán
Fernández Sánchez, José María
Montero, Salvador
author2_role author
author
author
author
author
dc.subject.none.fl_str_mv Nitrogen
Vibrational states
Ground states
Helium neutral atoms
Atom-molecule collisions
topic Nitrogen
Vibrational states
Ground states
Helium neutral atoms
Atom-molecule collisions
description 10 pages, 7 figures.-- PACS nr.: 34.50.Fa.
publishDate 2003
dc.date.none.fl_str_mv 2003
2008
2008
dc.type.none.fl_str_mv info:eu-repo/semantics/article
http://purl.org/coar/resource_type/c_6501
format article
dc.identifier.none.fl_str_mv http://hdl.handle.net/10261/8948
url http://hdl.handle.net/10261/8948
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv http://dx.doi.org/10.1063/1.1543945
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv 153905 bytes
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dc.publisher.none.fl_str_mv American Institute of Physics
publisher.none.fl_str_mv American Institute of Physics
dc.source.none.fl_str_mv reponame:DIGITAL.CSIC. Repositorio Institucional del CSIC
instname:Consejo Superior de Investigaciones Científicas (CSIC)
instname_str Consejo Superior de Investigaciones Científicas (CSIC)
reponame_str DIGITAL.CSIC. Repositorio Institucional del CSIC
collection DIGITAL.CSIC. Repositorio Institucional del CSIC
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repository.mail.fl_str_mv
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score 15.812429

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