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Article: Experimental study of the dynamics of D+H2 reactive and inelastic collisions below 1.0 eV relative energy
Title | Experimental study of the dynamics of D+H2 reactive and inelastic collisions below 1.0 eV relative energy |
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Authors | |
Issue Date | 1989 |
Publisher | American 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? |
Abstract | We 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 Identifier | http://hdl.handle.net/10722/167283 |
ISSN | 2023 Impact Factor: 3.1 2023 SCImago Journal Rankings: 1.101 |
ISI Accession Number ID |
DC Field | Value | Language |
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dc.contributor.author | Phillips, DL | en_US |
dc.contributor.author | Levene, HB | en_US |
dc.contributor.author | Valentini, JJ | en_US |
dc.date.accessioned | 2012-10-08T03:05:14Z | - |
dc.date.available | 2012-10-08T03:05:14Z | - |
dc.date.issued | 1989 | en_US |
dc.identifier.citation | The Journal of Chemical Physics, 1989, v. 90 n. 3, p. 1600-1609 | - |
dc.identifier.issn | 0021-9606 | en_US |
dc.identifier.uri | http://hdl.handle.net/10722/167283 | - |
dc.description.abstract | We 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.language | eng | en_US |
dc.publisher | American Institute of Physics. The Journal's web site is located at http://jcp.aip.org/jcp/staff.jsp | en_US |
dc.relation.ispartof | The Journal of Chemical Physics | en_US |
dc.rights | Copyright 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 https://doi.org/10.1063/1.456052 | - |
dc.title | Experimental study of the dynamics of D+H2 reactive and inelastic collisions below 1.0 eV relative energy | en_US |
dc.type | Article | en_US |
dc.identifier.email | Phillips, DL:phillips@hku.hk | en_US |
dc.identifier.authority | Phillips, DL=rp00770 | en_US |
dc.description.nature | published_or_final_version | en_US |
dc.identifier.doi | 10.1063/1.456052 | - |
dc.identifier.scopus | eid_2-s2.0-0000620760 | en_US |
dc.identifier.volume | 90 | en_US |
dc.identifier.issue | 3 | en_US |
dc.identifier.spage | 1600 | en_US |
dc.identifier.epage | 1609 | en_US |
dc.identifier.isi | WOS:A1989T018800037 | - |
dc.publisher.place | United States | en_US |
dc.identifier.scopusauthorid | Phillips, DL=7404519365 | en_US |
dc.identifier.scopusauthorid | Levene, HB=36839295400 | en_US |
dc.identifier.scopusauthorid | Valentini, JJ=7003875862 | en_US |
dc.identifier.issnl | 0021-9606 | - |