Astronomy and Astrophysics – Astrophysics
Scientific paper
Jan 1998
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998a%26a...329..375g&link_type=abstract
Astronomy and Astrophysics, v.329, p.375-379 (1998)
Astronomy and Astrophysics
Astrophysics
2
Molecular Data, Molecular Processes, Infrared: General, Ism: Lines And Bands, Methods: Laboratory
Scientific paper
Several new near infrared (NIR) emission bands between 7000 and 16000 cm(-1) of CO isolated in Ar matrices at 20 K have been observed that are due to radiative deactivation of the e(3) Sigma (-) , d(3Delta ) and a({') 3}Sigma (+) states to the a(3Pi ) state. The corresponding excitation spectra are due to the fourth positive system of CO, namely, the A(1Pi (v) (') ) <- X(1) Sigma (+) (v ({') '} =0) transition. The environment around CO, i.e., whether it is in the gas-phase or imbedded in a condensed environment, influences strongly which radiative channels get active or not and their transition energies. It is proposed that this behaviour can be taken to advantage to probe the environment of the interstellar matter.
Gudipati Murthy S.
Kalb Martin
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