Laser induced dispersed fluorescence spectra of CH3N radical and the lifetime of its Ã3E state

doi:10.1016/S0009-2614(97)00091-2

Chemical Physics Letters

Volume 267, Issues 3–4, 21 March 1997, Pages 345-350

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Abstract

The laser induced dispersed fluorescence spectra (LIDFS) of CH₃N radical from five different vibronic excited levels were recorded and assigned. The anharmonic constants of the ν″₃ (CN stretching) mode were determined to be ω₀ = 1049 ± 2 cm⁻¹, ω₀ξ₀ = 9 ± 0.5 cm⁻¹. The previous tentative assignment of 1₀¹ band in the excitation spectrum [J. Chem. Phys. 103 (1995) 4418] was confirmed by LIDFS. The lifetimes of different vibrational levels of the Ã³E state were measured and the radiative lifetimes of ν′ = 0, ν′₃ = 1, ν′₂ = 1, ν′₃ = 2, ν′₃ = 3 and ν′₁ = 1 states were extrapolated as 415 ± 8, 341 ± 10, 231 ± 18, 219 ± 9, 170 ± 3 and 166 ± 7 ns, respectively.

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Laser induced dispersed fluorescence spectra of CH3N radical and the lifetime of its Ã3E state

Abstract

Chem. Phys. Lett.

Chem. Phys. Lett.

J. Chem. Phys.

J. Chem. Phys.

J. Am. Chem. Soc.

J. Chem. Phys.

J. Chem. Phys.

Acta Phys. Chem. Sinica

Laser induced dispersed fluorescence spectra of CH₃N radical and the lifetime of its Ã³E state