Astronomy and Astrophysics – Astronomy
Scientific paper
Jan 1984
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984ap%26ss..98..269c&link_type=abstract
Astrophysics and Space Science (ISSN 0004-640X), vol. 98, no. 2, Jan. 1984, p. 269-273.
Astronomy and Astrophysics
Astronomy
2
Electron Transitions, Interstellar Gas, Methylene, Molecular Clouds, Radio Astronomy, Transition Probabilities, Electric Dipoles, Electronic Spectra, Microwaves, Molecular Energy Levels, Molecular Rotation
Scientific paper
Einstein A-coefficients for the electric-dipole transitions between the rotational levels up to 400 cm-1 in the ground vibrational state of methylene (CH2) are calculated. The coefficients are used to compute the mean-radiative-life-times of the levels. It is concluded that in hot molecular clouds, CH2 may be detected through the stimulated emission of the radiation at 69.36 GHz.
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