Population of N2(A3Σu+) metastable states in a pure nitrogen glow discharge
- 28 August 1981
- journal article
- Published by IOP Publishing in Journal of Physics B: Atomic and Molecular Physics
- Vol. 14 (16) , 2977-2987
- https://doi.org/10.1088/0022-3700/14/16/025
Abstract
The concentration of the nitrogen metastable molecule N2(A 3 Sigma u+) is determined in a pure nitrogen glow discharge as a function of the pressure (from 0.1 to 2 Torr) and of the discharge current (up to 30 mA cm-2) using the optical absorption of the first positive system bands. The absorption maximum is of the order of 2% corresponding to a N2(A 3 Sigma u+, nu =0) concentration of about 1.4*1012 cm-3. Measurements of the concentration of nitrogen atoms, the electronic field are also reported. A kinetic model indicates that the N2(A) molecules are created by electronic excitation from ground-state molecules and lost mainly by diffusion to the walls and collisions with N(4S) atoms.Keywords
This publication has 16 references indexed in Scilit:
- Discharge pumped mercuric halide dissociation lasersApplied Physics Letters, 1978
- Non-equilibrium dissociation of nitrogenRevue de Physique Appliquée, 1978
- Electron transport parameters and excitation rates in N2Journal of Applied Physics, 1976
- Rate constants for the quenching of N2 (A 3Σu+, vA = 0 – 8) by CO, CO2, NH3, NO, and O2The Journal of Chemical Physics, 1974
- Reaction rate constant for 2N2(A 3Σu+)→N2(C 3Πu) + N2(X1Σg+, ν′ > 0)The Journal of Chemical Physics, 1973
- Population of N2 (B 3Πg) by N2 (A3Σu+) during the nitrogen afterglowThe Journal of Chemical Physics, 1973
- N2 formation in the Lewis-Rayleigh afterglowFaraday Discussions of the Chemical Society, 1972
- Rate constants for quenching of molecular nitrogen (A3.SIGMA.u+) in active nitrogenThe Journal of Physical Chemistry, 1972
- Electron Energy Distributions and Collision Rates in Electrically Excited, CO, and CPhysical Review A, 1970
- Measurement of Weak Absorption by Molecules*Journal of the Optical Society of America, 1961