Astronomy and Astrophysics – Astronomy
Scientific paper
Sep 2011
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011apjs..196...10c&link_type=abstract
The Astrophysical Journal Supplement, Volume 196, Issue 1, article id. 10 (2011).
Astronomy and Astrophysics
Astronomy
Ism: Molecules, Line: Identification, Methods: Data Analysis, Methods: Laboratory, Molecular Data, Molecular Processes, Radio Lines: Ism
Scientific paper
The rotational spectra of the mono-deuterated isotopologues of trans-formic acid, trans-DCOOH and trans-HCOOD, were investigated. In the millimeter- and submillimeter-wave frequency regions the Lamb-dip technique was exploited to obtain sub-Doppler resolution and to resolve the hyperfine structure due to the deuterium and hydrogen nuclei, thus enabling the accurate determination of the corresponding hyperfine constants. The experimental determination was supported by high-level quantum-chemical calculations at the coupled-cluster level of theory using large atomic-orbital basis sets. The Lamb-dip measurements were also supplemented by THz Doppler-limited measurements in order to extend the predictive capability of the available spectroscopic parameters to higher frequencies.
Cazzoli Gabriele
Gauss Jürgen
Puzzarini Cristina
Stopkowicz Stella
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