Role Of Hot Molecule In UV Single-And Multiphoton Decomposition

Nobuaki Nakashima; Noriaki Ikeda; Keitaro Yoshihara

doi:10.1117/12.950653

18 May 1989 Role Of Hot Molecule In UV Single-And Multiphoton Decomposition

Nobuaki Nakashima, Noriaki Ikeda, Keitaro Yoshihara

Proceedings Volume 1033, Trends in Quantum Electronics; (1989) https://doi.org/10.1117/12.950653
Event: International Conference on Trends in Quantum Electronics, 1988, Bucharest, Romania

Abstract

The UV photochemistry of olefins and alkylbenzenes is described from a new point of view: the hot molecule mechanism. The hot molecule (denoted as is is formed by internal conversion to the ground state in the gas phase on irradiation with ArF laser light (193.2 nm). For the first time, dissociation rate constants for the hot molecule mechanism have been measured. The hot molecule (S₀**) has an another role. It can be an intermediate in UV multiphoton dissociation. S₀** shows strong absorption in the UV region and hence efficiently absorbs a second photon which causes dissociation. Radical fragmentations are major reactions of this new multiphoton chemistry.

Citation Download Citation

Nobuaki Nakashima, Noriaki Ikeda, and Keitaro Yoshihara "Role Of Hot Molecule In UV Single-And Multiphoton Decomposition", Proc. SPIE 1033, Trends in Quantum Electronics, (18 May 1989); https://doi.org/10.1117/12.950653

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