Laser investigation of decay dynamics in superexcited Rydberg states of NO

Asuka Fujii; Norio Morita

doi:10.1117/12.143085

22 April 1993 Laser investigation of decay dynamics in superexcited Rydberg states of NO

Asuka Fujii, Norio Morita

Proceedings Volume 1858, Laser Techniques for State-Selected and State-to-State Chemistry; (1993) https://doi.org/10.1117/12.143085
Event: OE/LASE'93: Optics, Electro-Optics, and Laser Applications in Scienceand Engineering, 1993, Los Angeles, CA, United States

Abstract

Superexcited Rydberg states (n equals 7-45, l equals s, p, and f, v equals 0, 1) of NO have been state-selectively produced with a two-color double resonance excitation method, and fragment atoms produced by predissociation and NO⁺ ions generated by autoionization have been directly detected by a resonance enhanced multiphoton ionization technique. As a result, not only N(²D)-generating predissociation predicted by previous studies has been confirmed, but unexpected generation of N(⁴S) has also been observed. Competition between vibrational autoionization and predissociation shows strong dependence on the orbital angular momentum and principal quantum number. Striking rotational state dependence of the decay dynamics in the superexcited 7f state (v equals 1) has been found. Through detailed analysis, it has been shown that the decay dynamics of the 7f state (v equals 1) is governed by predissociation processes due to direct coupling with (Sigma) ⁺ valence states. Furthermore, studying the competition between rotational autoionization and predissociation, it has also been demonstrated that the decay dynamics of the rotational superexcited states are predominantly governed by predissociation, not by rotational autoionization.

Citation Download Citation

Asuka Fujii and Norio Morita "Laser investigation of decay dynamics in superexcited Rydberg states of NO", Proc. SPIE 1858, Laser Techniques for State-Selected and State-to-State Chemistry, (22 April 1993); https://doi.org/10.1117/12.143085

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