Abstract
Continued study of the high-resolution Fourier transform spectroscopy (FTS) of the fundamental CO-stretching band of13CD3OH has given additional insight into the far-infrared (FIR) laser emission observed when this molecule is optically pumped by a CO2 laser. Eleven IR-pump/FIR-laser transition systems are considered. Seven represent completely new assignments, while four have been presented previously but are discussed further with reference to recently reported experimental data. Ten of the assignment schemes have been rigorously checked by forming closed combination loops, and accurate FIR laser wavenumbers have been obtained. The superiority in precision of the FIR laser wavenumbers determined from FTS combination loops over those from traditional wavelength measurements is demonstrated.
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M. Inguscio, K. M. Evenson, F. R. Petersen, F. Strumia, and E. Vasconcellos, Int. J. IR and MM Waves5, 1289–1296 (1984).
N. Ioli, A. Moretti, and F. Strumia, Appl. Phys. B48, 305–309 (1989).
I. Mukhopadhyay, R.M. Lees, and W. Lewis-Bevan, Int. J. IR and MM Waves9, 545–553 (1988).
D. Pereira, J.C.S. Moraes, A. Scalabrin, A, Moretti, and F. Strumia, “Measurement Assignments of New FIR Laser Lines from13CD3OH,” Proc. 15th Int. Conf. on Infrared and Millimeter Waves (ed. R. J. Temkin), SPIE1514, 735–737 (1990).
J.C.S. Moraes, E.M. Telles, F.C. Cruz, A. Scalabrin, D. Pereira, G. Carelli, N. Loli, A. Moretti, and F. Strumia, Int. J. IR and MM Waves12, 1475–1486 (1991).
D. Pereira, A. Scalabrin, G.P. Galvão, and K.M. Evenson, Int. J. IR and MM Waves13, 497–506 (1992).
J.C.S. Moraes, A. Scalabrin, D. Pereira, G. Carelli, N. Ioli, A. Moretti, and F. Strumia, Appl. Phys. B54, 24–28 (1992).
J.C.S. Moraes, A. Scalabrin, D. Pereira, G. Carelli, N. Ioli, A. Moretti, and F. Strumia, Infrared Phys.33, 133–139 (1992).
Li-Hong Xu, R.M. Lees, I. Mukhopadyay, and J.W.C. Johns, J. Mol. Spectrosc.153, 181–196 (1992).
Li-Hong Xu, R.M. Lees, I. Mukhopadyay, J.W.C. Johns, and G. Moruzzi, J. Mol. Spectrosc.157, (1993), in press.
Li-Hong Xu, R.M. Lees, and J.W.C. Johns, “Torsion-Rotation FIR Spectrum of13CD3OH,” Proc. Int. Conf. MM Wave and FIR Technology (ed. G.M. Tucker), Beijing, P.R. China, Aug., 1992, pp. 263–266
G. Moruzzi, J.C.S. Moraes, F. Strumia, R.M. Lees, B.P. Winnewisser and M. Winnewisser, “The Assignment of the Fourier Transform Spectrum of CH3OH and a New Line-Analysis Routine,” 12th Colloq. on High Resolution Mol. Spectrosc., Dijon, France, Sept., 1991, Paper B16.
F. Strumia, G. Carelli, N. Ioli, and A. Moretti, “Frequency Measurements of FIR Laser Lines of Astrophysical Interest,” Proc. 14th Int. Conf. IR and MM Waves, (ed. M. von Ortenberg), SPIE1240, pp 407 (1989).
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Xu, L.H., Lees, R.M. FIR laser assignments and frequency predictions for optically pumped13CD3OH by high-resolution Fourier transform spectroscopy. Int J Infrared Milli Waves 14, 569–587 (1993). https://doi.org/10.1007/BF02209265
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DOI: https://doi.org/10.1007/BF02209265