4B7 - Precision spectroscopy of new infrared emission system of molecular nitrogen
- 1 August 1966
- journal article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Journal of Quantum Electronics
- Vol. 2 (8), 229-232
- https://doi.org/10.1109/jqe.1966.1074036
Abstract
Stimulated emission and laser oscillation resulting from transient population inversions on a number of electronic transitions of molecular nitrogen have made it possible to more accurately specify energy differences between several excited singlet states of the molecule and in one case, that of thew ^{1}\Delta_{u}state, to more directly determine its absolute position with respect to the electronic ground state. Measurement accuracy has been improved on a system which we previously reported. A new emission system has been identified as resulting from transitions between thew ^{1}\Delta_{u}state and thea^{1}\Pi_{g}state. We have observed for the first time in the unperturbed region at lowJvalues Λ doubling in\upsilon = 0ofa^{1}\Pi_{g}. Very complex emission systems of more than eighty lines falling into four groups between 5.35 μm and 8.06 μm have been observed. No identification has yet been made.Keywords
This publication has 4 references indexed in Scilit:
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- The High-Resolution Absorption Spectrum of Nitrogen from 1060 TO 1520 Å. I. The α^{1}Π_{g} <- Χ^{1}Σ_{g}^{+} System.The Astrophysical Journal, 1965
- High-Resolution Absorption Spectra of Nitrogen in the Vacuum Ultraviolet.The Astrophysical Journal, 1957
- Emission Spectra of Nitrogen in the Vacuum UltravioletThe Journal of Chemical Physics, 1956