Absolute frequency measurements of the 2-0 band of CO at 2.3 μm; Calibration standard frequencies from high resolution color center laser spectroscopy
1983; Elsevier BV; Volume: 99; Issue: 2 Linguagem: Inglês
10.1016/0022-2852(83)90320-x
ISSN1096-083X
AutoresClifford R. Pollock, F. R. Petersen, D. A. Jennings, J. S. Wells, A. G. Maki,
Tópico(s)Atmospheric Ozone and Climate
ResumoThe absolute frequencies of 20 lines of the 2-0 band of CO near 4260 cm−1 have been measured by heterodyne frequency measurement techniques. Eleven of the lines were measured by saturated absorption techniques which produced linewidths of about 3 MHz. New rovibrational constants have been fitted to these measurements. A table of calculated transition frequencies is given with estimated absolute uncertainties as small as 0.0000023 cm−1 (70 kHz) near the band center. The pressure shifts of three lines have been measured and fall in the range from −0.9 to −3 kHz/Pa (−122 to −400 kHz/Torr). It is suggested that the generally accepted frequencies of the 1-0 band of CO should be lowered by 7 MHz.
Referência(s)