Radiative Lifetime Measurements and Study of Perturbed Electronic States of NO2 (original) (raw)

Trends in Atomic and Molecular Physics, 2000

Abstract

Mixing of ro-vibrational levels in the excited states of certain molecules leads to elongation of average lifetime of excited states. The relaxation of pure adiabaticity condition of Born-Oppenheimer states allows mixing of levels in the excited state. The extent of perturbation on the emitting level by the nearby lying electronic states is ro-vibrational and is quantum number specific. This introduces variability in the anomalous lifetime as a function of the excitation wavelength. For certain wavelengths, emissions from pure unperturbed states also are observed. The radiative lifetime measurement of NO2 in the excitation region 465–490 nm is presented in this paper.

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