Absolute rate constants and reactive cross sections for the reactions of O(1D) with molecular hydrogen and deuterium

S. Koppe; T. Laurent; P. D. Naik; H. R. Volpp; J. Wolfrum; T. Arusi-Parpar; I. Bar; S. Rosenwaks

doi:10.1016/0009-2614(93)85681-D

Absolute rate constants and reactive cross sections for the reactions of O(¹D) with molecular hydrogen and deuterium

S. Koppe, T. Laurent, P. D. Naik, H. R. Volpp, J. Wolfrum, T. Arusi-Parpar, I. Bar, S. Rosenwaks

Department of Physics

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Abstract

The dynamics of the reaction of O(¹D) with molecular hydrogen and deuterium has been investigated using "superthermal" O(¹D) atoms generated by laser photolysis of N₂O at 193 nm. H/D atom products have been detected under single-collision conditions by vacuum ultraviolet laser-induced fluorescence at the Lyman-α transition. With a calibration method using HCl photolysis as a source of well-defined H atom concentrations, the following absolute rate constants k and absolute reactive cross sections σ_R have been determined: k= (2.7±0.6) × 10^-10 cm³ s^-1 molecule^-1 and σ_R(0.12 eV) =7.6±1.5 Å² for the reaction O(¹D)+H₂→OH+H, and k=(2.3±0.5)×10^-10 cm³ s^-1 molecule^-1 and σ_R(0.18 eV)=7.0±1.4 Å² for the reaction O(¹D)+D₂→OD+D.

Original language	English
Pages (from-to)	546-552
Number of pages	7
Journal	Chemical Physics Letters
Volume	214
Issue number	6
DOIs	https://doi.org/10.1016/0009-2614(93)85681-D
State	Published - 19 Nov 1993

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General Physics and Astronomy
Physical and Theoretical Chemistry

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@article{c19f58ebc5ec40e4992ec1fb390bd2de,

title = "Absolute rate constants and reactive cross sections for the reactions of O(1D) with molecular hydrogen and deuterium",

abstract = "The dynamics of the reaction of O(1D) with molecular hydrogen and deuterium has been investigated using {"}superthermal{"} O(1D) atoms generated by laser photolysis of N2O at 193 nm. H/D atom products have been detected under single-collision conditions by vacuum ultraviolet laser-induced fluorescence at the Lyman-α transition. With a calibration method using HCl photolysis as a source of well-defined H atom concentrations, the following absolute rate constants k and absolute reactive cross sections σR have been determined: k= (2.7±0.6) × 10-10 cm3 s-1 molecule-1 and σR(0.12 eV) =7.6±1.5 {\AA}2 for the reaction O(1D)+H2→OH+H, and k=(2.3±0.5)×10-10 cm3 s-1 molecule-1 and σR(0.18 eV)=7.0±1.4 {\AA}2 for the reaction O(1D)+D2→OD+D.",

author = "S. Koppe and T. Laurent and Naik, {P. D.} and Volpp, {H. R.} and J. Wolfrum and T. Arusi-Parpar and I. Bar and S. Rosenwaks",

year = "1993",

month = nov,

day = "19",

doi = "10.1016/0009-2614(93)85681-D",

language = "English",

volume = "214",

pages = "546--552",

journal = "Chemical Physics Letters",

issn = "0009-2614",

publisher = "Elsevier B.V.",

number = "6",

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TY - JOUR

T1 - Absolute rate constants and reactive cross sections for the reactions of O(1D) with molecular hydrogen and deuterium

AU - Koppe, S.

AU - Laurent, T.

AU - Naik, P. D.

AU - Volpp, H. R.

AU - Wolfrum, J.

AU - Arusi-Parpar, T.

AU - Bar, I.

AU - Rosenwaks, S.

PY - 1993/11/19

Y1 - 1993/11/19

N2 - The dynamics of the reaction of O(1D) with molecular hydrogen and deuterium has been investigated using "superthermal" O(1D) atoms generated by laser photolysis of N2O at 193 nm. H/D atom products have been detected under single-collision conditions by vacuum ultraviolet laser-induced fluorescence at the Lyman-α transition. With a calibration method using HCl photolysis as a source of well-defined H atom concentrations, the following absolute rate constants k and absolute reactive cross sections σR have been determined: k= (2.7±0.6) × 10-10 cm3 s-1 molecule-1 and σR(0.12 eV) =7.6±1.5 Å2 for the reaction O(1D)+H2→OH+H, and k=(2.3±0.5)×10-10 cm3 s-1 molecule-1 and σR(0.18 eV)=7.0±1.4 Å2 for the reaction O(1D)+D2→OD+D.

AB - The dynamics of the reaction of O(1D) with molecular hydrogen and deuterium has been investigated using "superthermal" O(1D) atoms generated by laser photolysis of N2O at 193 nm. H/D atom products have been detected under single-collision conditions by vacuum ultraviolet laser-induced fluorescence at the Lyman-α transition. With a calibration method using HCl photolysis as a source of well-defined H atom concentrations, the following absolute rate constants k and absolute reactive cross sections σR have been determined: k= (2.7±0.6) × 10-10 cm3 s-1 molecule-1 and σR(0.12 eV) =7.6±1.5 Å2 for the reaction O(1D)+H2→OH+H, and k=(2.3±0.5)×10-10 cm3 s-1 molecule-1 and σR(0.18 eV)=7.0±1.4 Å2 for the reaction O(1D)+D2→OD+D.

UR - http://www.scopus.com/inward/record.url?scp=0001470419&partnerID=8YFLogxK

U2 - 10.1016/0009-2614(93)85681-D

DO - 10.1016/0009-2614(93)85681-D

M3 - Article

AN - SCOPUS:0001470419

SN - 0009-2614

VL - 214

SP - 546

EP - 552

JO - Chemical Physics Letters

JF - Chemical Physics Letters

IS - 6

ER -

Absolute rate constants and reactive cross sections for the reactions of O(¹D) with molecular hydrogen and deuterium

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