Radiation-induced perturbations in C2 and CH sidelight in the CO-He-Xe laser

C. E. Little; P. G. Browne

doi:10.1088/0953-4075/22/8/021

Radiation-induced perturbations in C₂ and CH sidelight in the CO-He-Xe laser

C. E. Little^*, P. G. Browne

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

5 Citations (Scopus)

Abstract

Visible C₂ and CH sidelight emission in a CO-He-Xe laser discharge exhibits intensity fluctuations of typically 30-40% when laser oscillation is chopped on and off. Chemical reactions in the discharge plasma are shown to play the major role in the perturbations of the C₂ Swan and high-pressure bands and the CH 4300 AA bands. The dissociation of CO is shown to take place in the reaction of CO (a ³ Pi _r) metastables and ground-state CO, and via the reaction of two vibrationally excited ground-state CO molecules, rather than via direct electron impact.

Original language	English
Article number	021
Pages (from-to)	1269-1283
Number of pages	15
Journal	Journal of Physics B: Atomic, Molecular and Optical Physics
Volume	22
Issue number	8
DOIs	https://doi.org/10.1088/0953-4075/22/8/021
Publication status	Published - 1989

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title = "Radiation-induced perturbations in C2 and CH sidelight in the CO-He-Xe laser",

abstract = "Visible C2 and CH sidelight emission in a CO-He-Xe laser discharge exhibits intensity fluctuations of typically 30-40% when laser oscillation is chopped on and off. Chemical reactions in the discharge plasma are shown to play the major role in the perturbations of the C2 Swan and high-pressure bands and the CH 4300 AA bands. The dissociation of CO is shown to take place in the reaction of CO (a 3 Pi r) metastables and ground-state CO, and via the reaction of two vibrationally excited ground-state CO molecules, rather than via direct electron impact.",

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AU - Little, C. E.

AU - Browne, P. G.

PY - 1989

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N2 - Visible C2 and CH sidelight emission in a CO-He-Xe laser discharge exhibits intensity fluctuations of typically 30-40% when laser oscillation is chopped on and off. Chemical reactions in the discharge plasma are shown to play the major role in the perturbations of the C2 Swan and high-pressure bands and the CH 4300 AA bands. The dissociation of CO is shown to take place in the reaction of CO (a 3 Pi r) metastables and ground-state CO, and via the reaction of two vibrationally excited ground-state CO molecules, rather than via direct electron impact.

AB - Visible C2 and CH sidelight emission in a CO-He-Xe laser discharge exhibits intensity fluctuations of typically 30-40% when laser oscillation is chopped on and off. Chemical reactions in the discharge plasma are shown to play the major role in the perturbations of the C2 Swan and high-pressure bands and the CH 4300 AA bands. The dissociation of CO is shown to take place in the reaction of CO (a 3 Pi r) metastables and ground-state CO, and via the reaction of two vibrationally excited ground-state CO molecules, rather than via direct electron impact.

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JF - Journal of Physics B: Atomic, Molecular and Optical Physics

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ER -

Radiation-induced perturbations in C₂ and CH sidelight in the CO-He-Xe laser

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