State selection and orientation of molecular ions: exploiting the photoelectron-photofragment ion recoil vector correlation

Ivan Powis; Katherine L. Reid

doi:10.1117/12.143108

22 April 1993 State selection and orientation of molecular ions: exploiting the photoelectron-photofragment ion recoil vector correlation

Ivan Powis, Katherine L. Reid

Author Affiliations +

Proceedings Volume 1858, Laser Techniques for State-Selected and State-to-State Chemistry; (1993) https://doi.org/10.1117/12.143108
Event: OE/LASE'93: Optics, Electro-Optics, and Laser Applications in Scienceand Engineering, 1993, Los Angeles, CA, United States

Abstract

Molecular photoionization and (photo-)dissociation dynamics both result, in general, in anisotropic fragment spatial distributions reflecting the non-spherical potentials experienced in these processes. In dissociative photoionization events, where two such nominally sequential fragmentations take place, the photoelectron and photofragment ion recoil directions can be mutually correlated. It is demonstrated how this correlation may be exploited to select both the state and effective orientation of an ensemble of symmetric top molecular ions. The feasibility of this orientational selection is explored both with model calculations of the photoelectron angular distributions resulting from ionization of partially oriented molecules and with experimental photoelectron-ion coincidence measurements.

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Ivan Powis and Katherine L. Reid "State selection and orientation of molecular ions: exploiting the photoelectron-photofragment ion recoil vector correlation", Proc. SPIE 1858, Laser Techniques for State-Selected and State-to-State Chemistry, (22 April 1993); https://doi.org/10.1117/12.143108

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