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Volume 153, 2011
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Dynamic stark control: model studies based on the photodissociation of IBr

Cristina Sanz-Sanz,a  Gareth W. Richingsa  and  Graham A. Wortha 
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a School of Chemistry, University of Birmingham, Edgbaston, UK

Abstract

The Stark effect is produced when a static field alters molecular states. When the field applied is time dependent, the process is known as the dynamic Stark effect. Of particular interest for the control of molecular dynamics is the Non-Resonant Dynamic Stark Effect (NRDSE), in which the time dependent field is unable to effect a one-photon excitation. The intermediate strength laser pulse instead shapes the potential energy surfaces (PES) and so guides the evolution of the system. A prototype control scheme uses the NRDSE to change the topography of PES in regions where they intersect, thus providing control over photochemistry. Following earlier experimental work, in this paper we study the NRDSE on a new 3 state model of the IBr molecule to gain insight into the mechanism of control at the avoided crossing that governs the branching ratio of the photodissociation.

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Publication details

The article was received on 11 Mar 2011, accepted on 26 Apr 2011 and first published on 05 Jul 2011


Article type: Paper
DOI: 10.1039/C1FD00039J
Citation: Faraday Discuss., 2011,153, 275-291
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    Dynamic stark control: model studies based on the photodissociation of IBr

    C. Sanz-Sanz, G. W. Richings and G. A. Worth, Faraday Discuss., 2011, 153, 275
    DOI: 10.1039/C1FD00039J

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