Abstract

We have determined the small signal gain for the P(18) transition of the ¹³CO₂ and ¹²CO₂ isotopes for identical pumping conditions in an x-ray preionized discharge amplifier. We have also determined vibrational–relaxation rate constants for He, N₂, and ¹³CO₂ from the decay of the small signal gain on the P(18) transition of ¹³CO₂ in the same x-ray preionized discharge amplifier. The vibrational–relaxation rate constants for N₂ and ¹³CO₂ on the ¹³CO₂ P(18) transition at 11.1 μm are a factor of 3 faster than the corresponding rate constants for the ¹²CO₂ isotope.

© 1989 Optical Society of America

Relaxation of Vibrational Energy in CO, HCl, CO₂, and N₂O

M. Margottin-Maclou, L. Doyennette, and L. Henry
Appl. Opt. 10(8) 1768-1780 (1971)

Quenching of Infrared Chemiluminescence. 1: The Rates of De-Excitation of CO (4 ≤ v ≤ 13) by He, CO, NO, N₂, O₂, OCS, N₂O, and CO₂

G. Hancock and I. W. M. Smith
Appl. Opt. 10(8) 1827-1842 (1971)

Spatial variation of gain and saturation in a fast axial flow CO₂ laser amplifier

Nobuaki Takahashi, Eiichi Tsuchida, and Heihachi Sato
Appl. Opt. 28(17) 3725-3736 (1989)

Anharmonic Effects in the Vibrational Relaxation of Diatomic Molecules in Expanding Flows

R. E. Center and G. E. Caledonia
Appl. Opt. 10(8) 1795-1802 (1971)

Infrared Emission of CO₂–N₂ and CO₂–N₂–He Plasmas*

T. K. McCubbin and Yu Hak Hahn
J. Opt. Soc. Am. 57(11) 1373-1375 (1967)