State-to-state predissociation dynamics of CN-Ne

Suli Fei; Michael C. Heaven

doi:10.1117/12.143096

22 April 1993 State-to-state predissociation dynamics of CN-Ne

Suli Fei, Michael C. Heaven

Proceedings Volume 1858, Laser Techniques for State-Selected and State-to-State Chemistry; (1993) https://doi.org/10.1117/12.143096
Event: OE/LASE'93: Optics, Electro-Optics, and Laser Applications in Scienceand Engineering, 1993, Los Angeles, CA, United States

Abstract

Electronic spectra and predissociation dynamics for the CN-Ne van der Waals complex are reported. From an analysis of the bands associated with the CN B-X transition, we conclude that the equilibrium geometry of the complex is `T'-shaped in the ground state, and linear in the excited state. Electronic and vibrational predissociation of CN(B)-Ne was found to be too slow to compete with radiative decay. Excitation spectra for the CN-Ne A-X transition were strongly influenced by predissociation processes. Two channels were characterized for CN(A²$PRD, v equals 3)-Ne. One was spin-orbit induced (CN(A²$PRD_1/2, v equals 3)-Ne yields CN(A²$PRD_3/2, v equals 3) + Ne), and the other mediated by interstate transfer (CN(A²$PRD_3/2, v equals 3)-Ne yields CN(X, ²(Sigma) ⁺, v equals 7) + Ne). The former was approximately 10⁴ times faster than the latter. Symmetry based propensities were evident in the rotational population distributions of the CN fragments.

Citation Download Citation

Suli Fei and Michael C. Heaven "State-to-state predissociation dynamics of CN-Ne", Proc. SPIE 1858, Laser Techniques for State-Selected and State-to-State Chemistry, (22 April 1993); https://doi.org/10.1117/12.143096

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