We present the first laboratory measurements of the hyperfine structure of the J=1-0 rotational transition of N2D+, a good tracer of the dense regions of molecular cloud cores, and the spectra of unresolved high J transitions recorded in the 308-463 GHz region. Together with a high sensitivity radio-astronomical spectrum of the J=1-0 rotational transition in a quiescent cloud core, we determined with high precision the frequencies of the seven hyperfine components and the molecular spectroscopic constants, allowing us to make predictions on the frequencies of higher J transitions occurring in the submillimeter-wave region.

Laboratory and radio-astronomical spectroscopy of the hyperfine structure of N2D+

DORE, LUCA;BENINATI, SABINA;CAZZOLI, GABRIELE
2004

Abstract

We present the first laboratory measurements of the hyperfine structure of the J=1-0 rotational transition of N2D+, a good tracer of the dense regions of molecular cloud cores, and the spectra of unresolved high J transitions recorded in the 308-463 GHz region. Together with a high sensitivity radio-astronomical spectrum of the J=1-0 rotational transition in a quiescent cloud core, we determined with high precision the frequencies of the seven hyperfine components and the molecular spectroscopic constants, allowing us to make predictions on the frequencies of higher J transitions occurring in the submillimeter-wave region.
L. Dore; P. Caselli; S. Beninati; T. Bourke; P. C. Myers; G. Cazzoli
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/11585/11632
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