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Proceedings Paper

Direct Rotational Population Distributions Of N[sub]2[/sub] And N[sub]2[/sub]+ In Pulsed Supersonic Beams
Author(s): A. P. Baronavski; H. Helvajian; B. M. DeKoven
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Paper Abstract

Rotational population measurements have been made on nitrogen neutrals and nitrogen ions in a pulsed supersonic expansion. The ions were produced by electron impact of the neutrals under conditions identical to those used for measurements of the neutrals. For nitrogen neutrals, two-photon laser induced fluorescence on the a--X transition was used to determine distributions, while single photon laser induced fluorescence on the well known B-X transition was used for the ions. This is the first example of the use of two-photon LIF for the detection and monitoring of N2 in a supersonic beam. Our data on the ion is compared to data in the literature for both the X and B states as well as populations calculated from our neutral data using the dipole model and the dipole plus 9 quadrupole interactions model. Details of these comparisons will be discussed.

Paper Details

Date Published: 28 June 1984
Proc. SPIE 0482, Applications of Laser Chemistry & Diagnostics, (28 June 1984); doi: 10.1117/12.943100
Show Author Affiliations
A. P. Baronavski, Naval Research Laboratory (United States)
H. Helvajian, Naval Research Laboratory (United States)
B. M. DeKoven, Naval Research Laboratory (United States)

Published in SPIE Proceedings Vol. 0482:
Applications of Laser Chemistry & Diagnostics
Albert B. Harvey, Editor(s)

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