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Proceedings Paper

State selection and orientation of molecular ions: exploiting the photoelectron-photofragment ion recoil vector correlation
Author(s): Ivan Powis; Katherine L. Reid
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Paper 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.

Paper Details

Date Published: 22 April 1993
PDF: 9 pages
Proc. SPIE 1858, Laser Techniques for State-Selected and State-to-State Chemistry, (22 April 1993); doi: 10.1117/12.143108
Show Author Affiliations
Ivan Powis, Univ. of Nottingham (United Kingdom)
Katherine L. Reid, Univ. of Nottingham (United Kingdom)


Published in SPIE Proceedings Vol. 1858:
Laser Techniques for State-Selected and State-to-State Chemistry
Cheuk Yiu Ng, Editor(s)

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