Two-dimensional ion-imaging of the angular distribution of fragments produced by photolysis of state-selected and oriented molecules

J. W. G. Mastenbroek; B. K. Nauta; M. H.M. Janssen; Steve Stolte

doi:10.1117/12.220867

18 September 1995 Two-dimensional ion-imaging of the angular distribution of fragments produced by photolysis of state-selected and oriented molecules

J. W. G. Mastenbroek, B. K. Nauta, M. H.M. Janssen, Steve Stolte

Author Affiliations +

Proceedings Volume 2548, Laser Techniques for State-Selected and State-to-State Chemistry III; (1995) https://doi.org/10.1117/12.220867
Event: SPIE's 1995 International Symposium on Optical Science, Engineering, and Instrumentation, 1995, San Diego, CA, United States

Abstract

Hexapole state-selection and orientation of parent molecules is combined with two-dimensional ion imaging of photofragments to study the direct photolysis of deuterated methyl iodide molecules (CD₃I). These two techniques allow us to create an essentially single quantum state-selected beam of oriented molecules, which are subsequently photodissociated, and to measure the final state-, velocity-, and angle-resolved recoil distribution of fragments. For the prompt dissociation of CD₃I at 266 nm the angular recoil distribution reflects predominantly the initial spatial orientation of the state-selected parent. The dependence of the orientation of the parent as a function of the orientation fieldstrength has been investigated and the three-dimensional recoil distributions of fragments are compared with theoretically calculated distributions.

Citation Download Citation

J. W. G. Mastenbroek, B. K. Nauta, M. H.M. Janssen, and Steve Stolte "Two-dimensional ion-imaging of the angular distribution of fragments produced by photolysis of state-selected and oriented molecules", Proc. SPIE 2548, Laser Techniques for State-Selected and State-to-State Chemistry III, (18 September 1995); https://doi.org/10.1117/12.220867

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