Fluorescence and zero-field level crossing spectroscopy of the C 2Σ+ state of NS

15 August 1974

journal article
research article
Published by AIP Publishing in The Journal of Chemical Physics

Vol. 61 (4) , 1475-1479
https://doi.org/10.1063/1.1682075

Abstract

Fluorescence and zero‐field level crossing (Hanle effect) spectra have been observed for the C²Σ⁺ state of NS. The NS radical is generated in a microwave discharge and flowed into a fluorescence cell. Optical excitation is by means of both an NS emission lamp and the Ba II 2304.235 Å atomic line. The latter coincides with absorption lines of the 0–0 band of the γ (C²Σ⁺−X²Π) system, exciting fluorescence from apparently several N′ levels. A Hanle effect with this fluorescence is analyzed by making assumptions about the contributions of different N′ levels and their g values. A radiative lifetime estimate of 6.5 nsec for C²Σ⁺(ν′ = 0) results.

Keywords

ABSORPTION LINE

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