Transient solvent dynamics and incoherent control of photodissociation pathways in I-2 cluster ions

Andrei Sanov; Sreela Nandi; W. Carl Lineberger

doi:10.1063/1.475928

Transient solvent dynamics and incoherent control of photodissociation pathways in I^-₂ cluster ions

Andrei Sanov, Sreela Nandi, W. Carl Lineberger

Research output: Contribution to journal › Article › peer-review

31 Scopus citations

Abstract

Detailed time-resolved photodissociation and caging dynamics in clusters are studied using I^-₂(OCS)₁₁ as a model system. We report new observations of product channel-dependent properties of nuclear coherence in the dissociated chromophore, reflecting complex dynamics of the solvent cage. The coherence feature is most pronounced in the caged two-photon channels and its relative amplitude increases with the product size. Shorter delays, on the time scale of coherent I⋯I^- motion, favor larger products, allowing for incoherent control of two-photon dissociation pathways by appropriately timing the two laser pulses. As an example of such control, I^-₂(OCS)₂ is produced most effectively by a limited set of pump-probe excitations at short delays. We emphasize generality of these results that relate to caging dynamics in any cluster ions.

Original language	English (US)
Pages (from-to)	5155-5158
Number of pages	4
Journal	Journal of Chemical Physics
Volume	108
Issue number	13
DOIs	https://doi.org/10.1063/1.475928
State	Published - Apr 1 1998
Externally published	Yes

ASJC Scopus subject areas

General Physics and Astronomy
Physical and Theoretical Chemistry

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title = "Transient solvent dynamics and incoherent control of photodissociation pathways in I-2 cluster ions",

abstract = "Detailed time-resolved photodissociation and caging dynamics in clusters are studied using I-2(OCS)11 as a model system. We report new observations of product channel-dependent properties of nuclear coherence in the dissociated chromophore, reflecting complex dynamics of the solvent cage. The coherence feature is most pronounced in the caged two-photon channels and its relative amplitude increases with the product size. Shorter delays, on the time scale of coherent I⋯I- motion, favor larger products, allowing for incoherent control of two-photon dissociation pathways by appropriately timing the two laser pulses. As an example of such control, I-2(OCS)2 is produced most effectively by a limited set of pump-probe excitations at short delays. We emphasize generality of these results that relate to caging dynamics in any cluster ions.",

author = "Andrei Sanov and Sreela Nandi and Lineberger, {W. Carl}",

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T1 - Transient solvent dynamics and incoherent control of photodissociation pathways in I-2 cluster ions

AU - Sanov, Andrei

AU - Nandi, Sreela

AU - Lineberger, W. Carl

PY - 1998/4/1

Y1 - 1998/4/1

N2 - Detailed time-resolved photodissociation and caging dynamics in clusters are studied using I-2(OCS)11 as a model system. We report new observations of product channel-dependent properties of nuclear coherence in the dissociated chromophore, reflecting complex dynamics of the solvent cage. The coherence feature is most pronounced in the caged two-photon channels and its relative amplitude increases with the product size. Shorter delays, on the time scale of coherent I⋯I- motion, favor larger products, allowing for incoherent control of two-photon dissociation pathways by appropriately timing the two laser pulses. As an example of such control, I-2(OCS)2 is produced most effectively by a limited set of pump-probe excitations at short delays. We emphasize generality of these results that relate to caging dynamics in any cluster ions.

AB - Detailed time-resolved photodissociation and caging dynamics in clusters are studied using I-2(OCS)11 as a model system. We report new observations of product channel-dependent properties of nuclear coherence in the dissociated chromophore, reflecting complex dynamics of the solvent cage. The coherence feature is most pronounced in the caged two-photon channels and its relative amplitude increases with the product size. Shorter delays, on the time scale of coherent I⋯I- motion, favor larger products, allowing for incoherent control of two-photon dissociation pathways by appropriately timing the two laser pulses. As an example of such control, I-2(OCS)2 is produced most effectively by a limited set of pump-probe excitations at short delays. We emphasize generality of these results that relate to caging dynamics in any cluster ions.

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Transient solvent dynamics and incoherent control of photodissociation pathways in I^-₂ cluster ions

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