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Article: Experimental study of the dynamics of D+H2 reactive and inelastic collisions below 1.0 eV relative energy

TitleExperimental study of the dynamics of D+H2 reactive and inelastic collisions below 1.0 eV relative energy
Authors
Issue Date1989
PublisherAmerican Institute of Physics. The Journal's web site is located at http://jcp.aip.org/jcp/staff.jsp
Citation
The Journal Of Chemical Physics, 1989, v. 90 n. 3, p. 1600-1609 How to Cite?
AbstractWe report the results of state-to-state dynamics experiments on the D + H2 → HD + H reaction as well as D + H2 → H 2 † + D energy transfer at relative energies of 0.67 and 0.79 eV. Both product state distributions and absolute partial cross sections have been determined, from coherent anti-Stokes Raman scattering (CARS) spectra of the HD and H2 † products recorded under single-collision conditions following pulsed-laser photolysis of DI to generate the D atom reactant. At both energies and for both reactive and inelastic collisions there is a strong dynamical bias against rotational and vibrational excitation of the product. However, at 0.67 eV there is an enhancement of both the relative and absolute yield of HD (v′ = 1), and to a lesser extent H2 (v′ = 1), the only energetically accessible vibrationally excited product states. This may be the result of a Feshbach resonance at ≈ 0.65 eV, just above the v′ = 1 threshold energy. Product quantum state distributions from quasiclassical trajectory calculations are in fairly good agreement with the experimental results, except that they do not show the v′ = 1 enhancement at 0.67 eV. However, the partial cross sections from the trajectory calculations are systematically larger than those measured. © 1989 American Institute of Physics.
Persistent Identifierhttp://hdl.handle.net/10722/167283
ISSN
2015 Impact Factor: 2.894
2015 SCImago Journal Rankings: 0.959

 

DC FieldValueLanguage
dc.contributor.authorPhillips, DLen_US
dc.contributor.authorLevene, HBen_US
dc.contributor.authorValentini, JJen_US
dc.date.accessioned2012-10-08T03:05:14Z-
dc.date.available2012-10-08T03:05:14Z-
dc.date.issued1989en_US
dc.identifier.citationThe Journal Of Chemical Physics, 1989, v. 90 n. 3, p. 1600-1609en_US
dc.identifier.issn0021-9606en_US
dc.identifier.urihttp://hdl.handle.net/10722/167283-
dc.description.abstractWe report the results of state-to-state dynamics experiments on the D + H2 → HD + H reaction as well as D + H2 → H 2 † + D energy transfer at relative energies of 0.67 and 0.79 eV. Both product state distributions and absolute partial cross sections have been determined, from coherent anti-Stokes Raman scattering (CARS) spectra of the HD and H2 † products recorded under single-collision conditions following pulsed-laser photolysis of DI to generate the D atom reactant. At both energies and for both reactive and inelastic collisions there is a strong dynamical bias against rotational and vibrational excitation of the product. However, at 0.67 eV there is an enhancement of both the relative and absolute yield of HD (v′ = 1), and to a lesser extent H2 (v′ = 1), the only energetically accessible vibrationally excited product states. This may be the result of a Feshbach resonance at ≈ 0.65 eV, just above the v′ = 1 threshold energy. Product quantum state distributions from quasiclassical trajectory calculations are in fairly good agreement with the experimental results, except that they do not show the v′ = 1 enhancement at 0.67 eV. However, the partial cross sections from the trajectory calculations are systematically larger than those measured. © 1989 American Institute of Physics.en_US
dc.languageengen_US
dc.publisherAmerican Institute of Physics. The Journal's web site is located at http://jcp.aip.org/jcp/staff.jspen_US
dc.relation.ispartofThe Journal of Chemical Physicsen_US
dc.rightsCreative Commons: Attribution 3.0 Hong Kong License-
dc.rightsCopyright (1989) American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics. The following article appeared in (The Journal Of Chemical Physics, 1989, v. 90 n. 3, p. 1600-1609) and may be found at (http://jcp.aip.org/resource/1/jcpsa6/v90/i3/p1600_s1).-
dc.titleExperimental study of the dynamics of D+H2 reactive and inelastic collisions below 1.0 eV relative energyen_US
dc.typeArticleen_US
dc.identifier.emailPhillips, DL:phillips@hku.hken_US
dc.identifier.authorityPhillips, DL=rp00770en_US
dc.description.naturepublished_or_final_versionen_US
dc.identifier.scopuseid_2-s2.0-0000620760en_US
dc.identifier.volume90en_US
dc.identifier.issue3en_US
dc.identifier.spage1600en_US
dc.identifier.epage1609en_US
dc.publisher.placeUnited Statesen_US
dc.identifier.scopusauthoridPhillips, DL=7404519365en_US
dc.identifier.scopusauthoridLevene, HB=36839295400en_US
dc.identifier.scopusauthoridValentini, JJ=7003875862en_US

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