Far-infrared rotational spectrum of HD: Line shape, dipole moment, and collisional interference

Journal Article · Tue Dec 15 04:00:00 EST 1987 · Phys. Rev. A; (United States)

DOI:https://doi.org/10.1103/PhysRevA.36.5556· OSTI ID:5646997

Drakopoulos, P G; Tabisz, G C

The rotational transitions R(0) to R(3) in pure HD gas have been studied in absorption with 0.06-cm/sup -1/ resolution at densities from 2 to 68 amagat at 295 K. The permanent dipole moment of HD was found to be 8.83(28), 7.94(2), 7.88(3), and 8.43(10) for R(0) to R(3), respectively, in units of 10/sup -4/ D. These are in general agreement with ab initio calculations except for an unpredicted strong rotational state dependence. Collisional interference was observed and the interference parameter, proportional to the ratio of the average induced dipole moment to the allowed moment, is negative for R(0) and R(1), positive for R(2) and R(3), and of a magnitude consistent with calculation. Comparisons are made with earlier work, particularly that of McKellar (Can. J. Phys. 64, 227 (1986)).

• Research Organization: Department of Physics, University of Manitoba, Winnipeg, Manitoba, Canada R3T2N2
• OSTI ID: 5646997
• Journal Information: Phys. Rev. A; (United States), Journal Name: Phys. Rev. A; (United States) Vol. 36:12; ISSN PLRAA
• Country of Publication: United States
• Language: English

Related Subjects

640302* -- Atomic
Molecular & Chemical Physics-- Atomic & Molecular Properties & Theory
74 ATOMIC AND MOLECULAR PHYSICS
ABSORPTION SPECTRA
COLLISIONS
DEUTERIDES
DEUTERIUM COMPOUNDS
DIPOLE MOMENTS
DIPOLES
ELECTROMAGNETIC RADIATION
ENERGY LEVELS
EXCITED STATES
FAR INFRARED RADIATION
HYDROGEN COMPOUNDS
HYDROGEN DEUTERIDE
INFRARED RADIATION
MULTIPOLES
RADIATIONS
ROTATIONAL STATES
SPECTRA
TRANSIENTS