Highly excited vibrational levels studies using time-resolved Fourier transform emission spectroscopy

Gregory V. Hartland; Dong Qin; Hai-Lung Dai

doi:10.1117/12.143079

22 April 1993 Highly excited vibrational levels studies using time-resolved Fourier transform emission spectroscopy

Gregory V. Hartland, Dong Qin, Hai-Lung Dai

Proceedings Volume 1858, Laser Techniques for State-Selected and State-to-State Chemistry; (1993) https://doi.org/10.1117/12.143079
Event: OE/LASE'93: Optics, Electro-Optics, and Laser Applications in Scienceand Engineering, 1993, Los Angeles, CA, United States

Abstract

The spectroscopy and dynamics of highly excited vibrational levels of the a¹A₁ and b¹B₁ states of CH₂ were studied using time-resolved Fourier transform emission spectroscopy. The use of a Fourier transform spectrometer allows efficient acquisition of dispersed fluorescence spectra over several thousand cm^-1 range in the visible, with better than 1 cm^-1 resolution, from this short lived and low concentration species. Furthermore, the temporal evolution of the dispersed fluorescence spectra due to collisional relaxation can be monitored with 50 ns time-resolution. The results presented and discussed in this paper are: (1) the state-to-state rotational energy transfer and reactive cross- sections for b¹B₁ (0, 16^O, 0) CH₂; and (2) rotational analysis of several previously unobserved high vibrational levels of the CH₂ a¹A₁ state.

Citation Download Citation

Gregory V. Hartland, Dong Qin, and Hai-Lung Dai "Highly excited vibrational levels studies using time-resolved Fourier transform emission spectroscopy", Proc. SPIE 1858, Laser Techniques for State-Selected and State-to-State Chemistry, (22 April 1993); https://doi.org/10.1117/12.143079

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