Comparative Studies ofJ′←J= 1 ← 0 CO Line Parameters in Frequency and Time Domains

Foreign Gas Broadening Studies of the J' ←J = 1← 0 Rotational Line of CO by Frequency and Time Domain Techniques

“…The data demonstrate a good consistency between the results from the measurements with use of time-and frequency-domain techniques, respectively. The improvements in the experimental set-up for the frequency-domain technique allowed to increase significantly the accuracy of pressure broadening data as compared to previous results [2]. The pressure dependence of halfwidth of the line are shown in Fig.…”

“…This procedure was continued by further adding a foreign gas up to a partial pressure of about 3 Torr. The self-broadening parameter of carbon monoxide was also remeasured with higher accuracy than before [2] using the Baratron pressure gauge.…”

A Comparison of Lineshape Models in the Analysis of Modulated and Natural Rotational Line Profiles: Application to the Pressure Broadening of OCS and CO

“…In Figure 7 the line profile of the J = 1 ← 0 transition of 12 CO, recorded with the amplitude modulation technique at P = 51.8 mTorr, has been reported and the residuals for VP, GP, and RP models are compared. As expected, we can see that GP and RP well reproduce the lineshape, while VP presents the characteristic residual.…”

“…The J = 1 ← 0 transition of the vibrational ground state of 12 temperature (296 ± 1 K) employing both amplitude modulation (P range: up to 400 mTorr) and frequency modulation (P range: up to 400 mTorr), and the self broadening has been analyzed using VP, GP, and RP models. As for OCS, in the case of the frequency modulation technique, we have employed a modulation depth approximately equal to the total half width.…”

Pressure Self-shift of the J = 1 ← 0 Line of Carbon Monoxide

“…method described in (5,6). Briefly, the spectral line was digitally recorded with step-by-step frequency tuning of the radiation source.…”