Line strength and self-broadening coefficient of the pure rotational S(1) quadrupole line in H2

Details Line strength and self-broadening coefficient of the pure rotational S(1) quadrupole line in H2 Line strength and self-broadening coefficient of the pure rotational S(1) quadrupole line in H2

Jun 1994

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994apj...428l..77r&link_type=abstract

The Astrophysical Journal, vol. 428, no. 2, pt. 2, p. L77-L79

Astronomy and Astrophysics

Astronomy

4

Absorption Cross Sections, Astronomical Spectroscopy, Hydrogen, Infrared Astronomy, Molecules, Pressure Broadening, Quadrupoles, Rotational Spectra, Solar System, Transition Probabilities, Far Infrared Radiation, Laboratory Equipment, Line Shape, Semiconductor Lasers, Tunable Lasers

Scientific paper

The absolute intensity, S1, and self-broadening coefficient, gammaL, for H2 Szero(1) pure rotational line at 17.0348 micrometers (587.032 cm-1) have been measured for the first time using a tunable diode laser spectrometer with a resolution of approximately 1 x 10-3 cm-1. By fitting a Galatry line shape convolved with a 1 x 10-3 cm-1 Gaussian instrument profile to absorption profiles, for H2 pressures ranging from 0.34 to 1.30 atm, values of s1 = (7.0 +/- 0.4) x 10-8 cm-2 atm-1 and gammaL = (1.73 +/- 0.12) x 10-3 cm-1 atm-1 were obtained.

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