Active Nitrogen at High Pressure
- 15 February 1962
- journal article
- research article
- Published by AIP Publishing in The Journal of Chemical Physics
- Vol. 36 (4), 926-940
- https://doi.org/10.1063/1.1732691
Abstract
A pure nitrogen afterglow has been studied spectroscopically at pressures up to 1 atm and up to several seconds after the discharge. The first positive bands of nitrogen continue to show an unchanged preferential enhancement of bands with v′=11 at high pressure, but their decay with time, measured photoelectrically, indicates that at high pressure N(4S) atoms must be removed by a more rapid process than recombination in triple collisions; it is suggested that this may be a two‐body reaction with an oxide of nitrogen. Forbidden radiation from O, N, and N2 predominates over the first positive bands at high pressure, and a high degree of immunity toward deactivating collisions is shown to be required for the metastable states N(2P), O(1S), and N2(A 3Σu+). The absolute intensity and decay of the forbidden radiation indicates that O(1S) must be created in the afterglow while N(2P), and to some extent N2(A 3Σu+), survive from the discharge. The observations favor a long radiative lifetime near 1 sec for N2(A 3Σu+).Keywords
This publication has 27 references indexed in Scilit:
- Rates of the Reactions of Nitrogen Atoms with Oxygen and with Nitric OxideNature, 1961
- Radiation from hot air: Part II. Shock tube study of absolute intensitiesAnnals of Physics, 1959
- Spectra of Argon, Oxygen, and Nitrogen MixturesPhysical Review B, 1958
- Spectroscopic Evidence for Presence of Atoms in Active NitrogenProceedings of the Physical Society. Section B, 1956
- A New Method for the Production of Active Nitrogen and its Application to the Study of Collision Effects in the Nitrogen Molecular SpectrumProceedings of the Physical Society. Section A, 1954
- Experiments on Production of Auroral RadiationProceedings of the Physical Society. Section A, 1952
- A Remarkable Green Line SourceNature, 1942
- Band Spectra in Nitrogen at Atmospheric Pressure. A Source of Band Spectra ExcitationPhysical Review B, 1939
- The Preparation and Properties of Auroral AfterglowsPhysical Review B, 1938
- An active modification of nitrogen. -VIIProceedings of the Royal Society of London. Series A, Containing Papers of a Mathematical and Physical Character, 1916