Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7846212 | Journal of Quantitative Spectroscopy and Radiative Transfer | 2017 | 5 Pages |
Abstract
We report on a precision spectroscopic study of room-temperature H12C13CH in the 6463-6520â¯cmâ1 range, using a continuous-wave diode laser phase-locked to a near-infrared optical frequency comb synthesizer stabilized, in turn, against a GPS-disciplined rubidium clock. By tuning the comb repetition frequency, several ro-vibrational transitions in the P and R branches of the 2ν3 overtone band are recorded. Accuracy levels as low as 100â¯kHz, 5·10â10 in fractional terms, are obtained in the determination of absolute line-center frequencies. In addition, line intensities are measured for the first time, with a best fractional uncertainty of 1%, and used to retrieve the purely vibrational transition dipole moment in conjunction with the first-order Herman-Wallis factor. Finally, the pressure broadening coefficients γself are also derived for the studied transitions.
Keywords
Related Topics
Physical Sciences and Engineering
Chemistry
Spectroscopy
Authors
Valentina Di Sarno, Paolo De Natale, Jordanka Tasseva, Luigi Santamaria, Elisabetta Cané, Filippo Tamassia, Pasquale Maddaloni,