Back to Search
Start Over
Terahertz spectroscopy of ground state HD18O
- Source :
- Journal of Molecular Spectroscopy. 328:27-31
- Publication Year :
- 2016
- Publisher :
- Elsevier BV, 2016.
-
Abstract
- Terahertz absorption spectroscopy was employed to measure the ground state pure rotational transitions of the water isotopologue HD 18 O . A total of 105 pure rotational transitions were observed in the 0.5–5.0 THz region with ∼ 100 kHz accuracy for the first time. The observed positions were fit to experimental accuracy using the Euler series expansion of the asymmetric-top Hamiltonian together with the literature Microwave, Far-IR and IR data in the ground state and ν 2 . The new measurements and predictions reported here support the analysis of astronomical observations by high-resolution spectroscopic telescopes such as SOFIA and ALMA where laboratory rest frequencies with uncertainties of 1 MHz or less are required for proper analysis of velocity resolved astrophysical data.
- Subjects :
- Physics
010504 meteorology & atmospheric sciences
Absorption spectroscopy
business.industry
Terahertz radiation
01 natural sciences
Atomic and Molecular Physics, and Optics
Terahertz spectroscopy and technology
Computational physics
symbols.namesake
Optics
0103 physical sciences
symbols
Isotopologue
Physical and Theoretical Chemistry
Ground state
business
Series expansion
Hamiltonian (quantum mechanics)
010303 astronomy & astrophysics
Astrophysics::Galaxy Astrophysics
Spectroscopy
Microwave
0105 earth and related environmental sciences
Subjects
Details
- ISSN :
- 00222852
- Volume :
- 328
- Database :
- OpenAIRE
- Journal :
- Journal of Molecular Spectroscopy
- Accession number :
- edsair.doi...........3d6ae4e3b054e8a185dadc5e54151f14