Astronomy and Astrophysics – Astrophysics
Scientific paper
May 1999
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999jmosp.195..177m&link_type=abstract
Journal of Molecular Spectroscopy, Volume 195, Issue 1, p. 177-184.
Astronomy and Astrophysics
Astrophysics
12
Scientific paper
The rotational spectrum of the NH2radical in itsX~2B1ground vibronic state was investigated between 614 and 1003 GHz. One hundred fifty-nine newly observed lines (188 hyperfine components) of six rotational transitions with 0 <=N<= 5 and 0 <=Ka<= 4 were used in the final, global fit of field-free data for the (000) vibrational state. Recent results from Fourier transform far-infrared (FT-FIR), and millimeter- and submillimeter-wave spectroscopy, as well as microwave optical double resonance (MODR) and recent FIR laser sideband data, were also used in the fit. A large set of spectroscopic constants reproduces the input data within experimental uncertainties and permits the precise prediction of low-N, low-Katransitions of interest for the astrophysical community. In particular, the astrophysically important 111-000transition of ortho NH2was observed near 952.57 and 959.50 GHz.
Belov Sergei P.
Klein Henrik
Morino Isamu
Müller Holger S. P.
Saito Shuji
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