Rotational-state dependent selectivity in the bond fission of C2HD(5ν1)

T. Arusi-Parpar; R. P. Schmid; R. J. Li; I. Bar; S. Rosenwaks

doi:10.1016/S0009-2614(97)00163-2

Rotational-state dependent selectivity in the bond fission of C₂HD(5ν₁)

T. Arusi-Parpar, R. P. Schmid, R. J. Li, I. Bar, S. Rosenwaks

Department of Physics

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35 Scopus citations

Abstract

We report the first demonstration of rotational-state selectivity in bond fission. C₂HD is prepared in the 5ν₁ vibrational-state and photodissociated by ∼ 243.1 nm photons that also probe the H/D fragments. The production of both H and D is greatly enhanced upon rovibrational excitation and is rotational-state dependent. The H/D branching ratio for the photodissociation of C₂HD (5ν₁) is 1.5 ± 0.2 for J′ = 2 and 4.9 ± 0.5 for J′ = 4. Possible mechanisms for the rotational dependence are discussed.

Original language	English
Pages (from-to)	163-168
Number of pages	6
Journal	Chemical Physics Letters
Volume	268
Issue number	1-2
DOIs	https://doi.org/10.1016/S0009-2614(97)00163-2
State	Published - 4 Apr 1997

ASJC Scopus subject areas

Physics and Astronomy (all)
Physical and Theoretical Chemistry

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10.1016/S0009-2614(97)00163-2

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title = "Rotational-state dependent selectivity in the bond fission of C2HD(5ν1)",

abstract = "We report the first demonstration of rotational-state selectivity in bond fission. C2HD is prepared in the 5ν1 vibrational-state and photodissociated by ∼ 243.1 nm photons that also probe the H/D fragments. The production of both H and D is greatly enhanced upon rovibrational excitation and is rotational-state dependent. The H/D branching ratio for the photodissociation of C2HD (5ν1) is 1.5 ± 0.2 for J′ = 2 and 4.9 ± 0.5 for J′ = 4. Possible mechanisms for the rotational dependence are discussed.",

author = "T. Arusi-Parpar and Schmid, {R. P.} and Li, {R. J.} and I. Bar and S. Rosenwaks",

note = "Funding Information: We thank P.J. Dagdigian for useful discussions. This research was supported by grant No. 92-00328 from the United States-Israel Binational Science Foundation (BSF), Jerusalem, Israel and by a grant from the James Franck Binational German-Israeli Program in Laser Matter Interaction. RPS thanks the MINERVA-Stiftung Ges. f'tir die Forschung (MPG) for a scholarship.",

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doi = "10.1016/S0009-2614(97)00163-2",

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T1 - Rotational-state dependent selectivity in the bond fission of C2HD(5ν1)

AU - Arusi-Parpar, T.

AU - Schmid, R. P.

AU - Li, R. J.

AU - Bar, I.

AU - Rosenwaks, S.

N1 - Funding Information: We thank P.J. Dagdigian for useful discussions. This research was supported by grant No. 92-00328 from the United States-Israel Binational Science Foundation (BSF), Jerusalem, Israel and by a grant from the James Franck Binational German-Israeli Program in Laser Matter Interaction. RPS thanks the MINERVA-Stiftung Ges. f'tir die Forschung (MPG) for a scholarship.

PY - 1997/4/4

Y1 - 1997/4/4

N2 - We report the first demonstration of rotational-state selectivity in bond fission. C2HD is prepared in the 5ν1 vibrational-state and photodissociated by ∼ 243.1 nm photons that also probe the H/D fragments. The production of both H and D is greatly enhanced upon rovibrational excitation and is rotational-state dependent. The H/D branching ratio for the photodissociation of C2HD (5ν1) is 1.5 ± 0.2 for J′ = 2 and 4.9 ± 0.5 for J′ = 4. Possible mechanisms for the rotational dependence are discussed.

AB - We report the first demonstration of rotational-state selectivity in bond fission. C2HD is prepared in the 5ν1 vibrational-state and photodissociated by ∼ 243.1 nm photons that also probe the H/D fragments. The production of both H and D is greatly enhanced upon rovibrational excitation and is rotational-state dependent. The H/D branching ratio for the photodissociation of C2HD (5ν1) is 1.5 ± 0.2 for J′ = 2 and 4.9 ± 0.5 for J′ = 4. Possible mechanisms for the rotational dependence are discussed.

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U2 - 10.1016/S0009-2614(97)00163-2

DO - 10.1016/S0009-2614(97)00163-2

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JO - Chemical Physics Letters

JF - Chemical Physics Letters

IS - 1-2

ER -

Rotational-state dependent selectivity in the bond fission of C₂HD(5ν₁)

Abstract

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