Abstract

Air-broadened and N₂-broadened halfwidths at room temperature for twenty-five transitions in the ν₄ fundamental band of ¹²CH₄ have been determined from IR absorption spectra recorded with a tunable diode laser spectrometer. Two tunable diode lasers operating in the 1250–1380-cm⁻¹ region were used to obtain these data. Air-broadened halfwidths for twenty of these lines were also determined from additional spectra recorded at 0.01-cm⁻¹ resolution with the Fourier transform spectrometer in the McMath solar telescope complex on Kitt Peak. The air-broadened halfwidths obtained from these two techniques are very consistent with agreement better than 3% in most cases.

© 1985 Optical Society of America

Absolute intensities and self-, N₂-, and air-broadened Lorentz halfwidths for selected lines in the ν₃ band of ¹²CH₃D from measurements with a tunable diode laser spectrometer

V. Malathy Devi, Curtis P. Rinsland, D. Chris Benner, Mary Ann H. Smith, and K. B. Thakur
Appl. Opt. 25(11) 1848-1853 (1986)

Measurements of air-broadened and nitrogen-broadened Lorentz width coefficients and pressure shift coefficients in the ν₄ and ν₂ bands of 12CH₄

Curtis P. Rinsland, V. Malathy Devi, Mary Ann H. Smith, and D. Chris Benner
Appl. Opt. 27(3) 631-651 (1988)

Measurements of air-, N₂-, and O₂-broadened halfwidths and pressure-induced line shifts in the ν₃ band of ¹³CH₄

V. Malathy Devi, D. Chris Benner, Mary Ann H. Smith, and Curtis P. Rinsland
Appl. Opt. 30(3) 287-304 (1991)

Air-broadened Lorentz halfwidths and pressure-induced line shifts in the ν₄ band of ¹³CH₄

V. Malathy Devi, Curtis P. Rinsland, Mary Ann H. Smith, and D. Chris Benner
Appl. Opt. 27(11) 2296-2308 (1988)

Measurements of argon broadened Lorentz width and pressure-induced line shift coefficients in the ν₄ band of ¹²CH₄

Curtis P. Rinsland, V. Malathy Devi, Mary Ann H. Smith, and D. Chris Benner
Appl. Opt. 28(11) 2111-2118 (1989)