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J Chem Phys. 2004 Dec 22;121(24):12353-60. doi: 10.1063/1.1825381.

Two-photon dissociation of the NO dimer in the region 7.1-8.2 eV: excited states and photodissociation pathways.

The Journal of chemical physics

V Dribinski, A B Potter, I Fedorov, H Reisler

Affiliations

  1. Department of Chemistry, University of Southern California, Los Angeles, California 90089-0482, USA.

PMID: 15606254 DOI: 10.1063/1.1825381

Abstract

A study of excited states of the NO dimer is carried out at 7.1-8.2 eV excitation energies. Photoexcitation is achieved by two-photon absorption at 300-345 nm followed by (NO)(2) dissociation and detection of electronically excited products, mostly in n=3 Rydberg states of NO. Photoelectron imaging is used as a tool to identify product electronic states by using non-state-selective ionization. Photofragment ion imaging is used to characterize product translational energy and angular distributions. Evidence for production of NO(A (2)Sigma(+)), NO(C (2)Pi), and NO(D (2)Sigma(+)) Rydberg states of NO, as well as the valence NO(B (2)Pi) state, is obtained. On the basis of product translational energy and angular distributions, it is possible to characterize the excited state(s) accessed in this region, which must possess a significant Rydberg character.

(c) 2004 American Institute of Physics.

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