Assignments of laser lines in optically pumped CH/sub 3/CN

Journal Article · Mon Sep 01 04:00:00 EDT 1980 · Int. J. Infrared Millim. Waves; (United States)

DOI:https://doi.org/10.1007/BF01007325· OSTI ID:5883594

Arimondo, E ^[1]; Inguscio, M ^[2]

---

1. Pisa, Universita, Pisa, Italy
2. CNR, Gruppo Nazionale di Struttura della Materia, Pisa, Italy

Far infrared laser lines in optically pumped CH/sub 3/CN are assigned to rotation-vibrational transitions on the basis of an analysis of available spectroscopic data. Following a review of the vibrational-rotational structure of CH/sub 3/CN, a large majority of the FIR emission is identified with vibrational-rotational transitions by means of known CO/sub 2/ IR laser pump frequencies, FIR CH/sub 3/CN lasing frequencies and the relative polarization of the pump and output beams, with Fermi and Coriolis interactions taken into account. Lines identified include all those pumped by the nu 4-0 band, four pumped by the nu 4 plus nu 8-nu 8 hot band, ten pumped by the perpendicular nu 7 band, and seven pumped by the nu 7 plus nu 8-nu 8 hot band. New values are proposed for the rotational and vibrational constants of CH/sub 3/CN, and a need for more accurate experimental measurements is pointed out.

• OSTI ID: 5883594
• Journal Information: Int. J. Infrared Millim. Waves; (United States), Journal Name: Int. J. Infrared Millim. Waves; (United States) Vol. 1; ISSN IJIWD
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
420300* -- Engineering-- Lasers-- (-1989)
ABSORPTION SPECTRA
ALKANES
CARBON DIOXIDE LASERS
CYANIDES
ELECTROMAGNETIC RADIATION
FAR INFRARED RADIATION
GAS LASERS
HYDROCARBONS
INFRARED RADIATION
LASER SPECTROSCOPY
LASERS
METHANE
MOTION
OPTICAL PUMPING
ORGANIC COMPOUNDS
OSCILLATIONS
PUMPING
RADIATIONS
ROTATION
SPECTRA
SPECTROSCOPY