Abstract

Samples of CO₂ at pressures up to 21.3 atm and with paths as long as 1067 m have been employed to measure CO₂ absorption between 1100 and 1835 cm⁻¹. Most of the absorption is due to the ν₁ and 2ν₂ bands. These bands are forbidden for the symmetric ¹⁶O¹²C¹⁶O and ¹⁶O¹³C¹⁶O molecules and, therefore, produce only pressure-induced absorption. The asymmetric ¹⁶O¹²C¹⁸O and ¹⁶O¹²C¹⁷O molecules produce bands that contain components of both intrinsic and pressure-induced absorption. The integrated-absorption coefficient for the intrinsic absorption is 1.08×10⁻²² (±10%) molecules ⁻¹ cm² cm⁻¹. The integrated pressure-induced absorption coefficient is 1.68×10⁻²² (±8%) molecules ⁻¹ cm² atm⁻¹ cm⁻¹.

© 1971 Optical Society of America

Absorption of Infrared Radiant Energy by CO₂ and H₂O. III. Absorption by H₂O between 0.5 and 36 cm⁻¹ (278 μ−2 cm)*

Darrell E. Burch
J. Opt. Soc. Am. 58(10) 1383-1394 (1968)

Absorption of Infrared Radiant Energy by CO₂ and H₂O. IV. Shapes of Collision-Broadened CO₂ Lines*

Darrell E. Burch, David A. Gryvnak, Richard R. Patty, and Charlotte E. Bartky
J. Opt. Soc. Am. 59(3) 267-280 (1969)

Absorption of Infrared Radiation by CO₂ and H₂O. II. Absorption by CO₂ between 8000 and 10 000 cm⁻¹ (1–1.25 Microns)*

Darrell E. Burch, David A. Gryvnak, and Richard R. Patty
J. Opt. Soc. Am. 58(3) 335-341 (1968)

Infrared absorption coefficient of H₂SO₄ vapor from 1190 to 1260 cm⁻¹

Richard F. Majkowski
J. Opt. Soc. Am. 67(5) 624-627 (1977)

Spectroscopic Studies of Stark Effect in CH₃Cl and its Application to Q Switching of the CO₂ Laser

Adam D. Devir
J. Opt. Soc. Am. 61(12) 1660-1665 (1971)