Collision-induced light scattering of hydrogen gas at low density

Journal Article · Fri Sep 01 04:00:00 EDT 1989 · Physical Review (Section) A: General Physics; (USA)

DOI:https://doi.org/10.1103/PhysRevA.40.2276· OSTI ID:5401218

Brown, M S ^[1]; Wang, S ^[2]; Frommhold, L ^[3]

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1. Department of Physics, University of Texas, Austin, Texas 78712-1081 (US)
2. Physics Department, University of Beijing, China
3. Department of Physics, University of Texas, Austin, Texas 78712-1081

The room-temperature, binary, collision-induced, translational, and rotational spectra of molecular hydrogen are reported. The translational pair spectrum is separated into completely depolarized and polarized components; both are analyzed with quantum line-shape calculations based on the isotropic potential approximation and the dipole-induced-dipole (DID) model for the pair polarizability. A small overlap correction to the DID anisotropy yields a computed line shape that agrees with the observed depolarized, collision-induced spectrum. A substantial overlap correction to the DID trace is needed to produce a line shape consistent with the measurement of the collision-induced trace spectrum. Additionally, this modified DID trace reproduces the experimental data on the second dielectric virial coefficient.

• OSTI ID: 5401218
• Journal Information: Physical Review (Section) A: General Physics; (USA), Journal Name: Physical Review (Section) A: General Physics; (USA) Vol. 40:5; ISSN PLRAA; ISSN 0556-2791
• Country of Publication: United States
• Language: English

Related Subjects

640302* -- Atomic
Molecular & Chemical Physics-- Atomic & Molecular Properties & Theory
74 ATOMIC AND MOLECULAR PHYSICS
AMBIENT TEMPERATURE
ANISOTROPY
DIPOLES
ELEMENTS
ENERGY LEVELS
EXCITED STATES
HYDROGEN
LEVEL WIDTHS
LIGHT SCATTERING
MEDIUM TEMPERATURE
MULTIPOLES
NONMETALS
PRESSURE DEPENDENCE
ROTATIONAL STATES
SCATTERING