Collision-induced rototranslational spectra of H/sub 2/-He: Accounting for the anisotropic interaction

Journal Article · Tue Jul 01 04:00:00 EDT 1986 · Phys. Rev. A; (United States)

DOI:https://doi.org/10.1103/PhysRevA.34.632· OSTI ID:5648131

Moraldi, M; Borysow, A; Borysow, J; Frommhold, L

In a previous paper (G. Birnbaum e-italict-italic a-italicl-italic., Phys. Rev. A 29, 595 (1984)) the collision-induced rototranslational absorption spectra of H/sub 2/-He were computed from first principles, with the assumption of i-italics-italico-italict-italicr-italico-italicp-italici-italicc-italic interaction. Here, we study the effects of the a-italicn-italici-italics-italico-italict-italicr-italico-italicp-italicy-italic on the basis of a distorted-wave approximation. Computed spectral intensities and shapes of the rotational lines differ from the previous results by less than the numerical uncertainties of the computations (--1%), except in the far wings where intensities are increasingly greater than comparable results based on isotropic interaction.

• Research Organization: Dipartimento di Fisica dell'Universita-grave-accent degli Studi di Firenze, Unita-grave-accent di Firenze, Gruppo Nazionale di Struttura della Materia del Consiglio Nazionale delle Richerche, ed Unita-grave-accent di Firenze, Ministero della Pubblica Istruzione, Centro Interuniversitario di Struttura della Materia di Firenze, I-50125
• OSTI ID: 5648131
• Journal Information: Phys. Rev. A; (United States), Journal Name: Phys. Rev. A; (United States) Vol. 34:1; 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
ANISOTROPY
ATMOSPHERES
ATOM COLLISIONS
ATOM-MOLECULE COLLISIONS
COLLISIONS
DISTORTED WAVE THEORY
ELEMENTS
ENERGY LEVELS
EXCITED STATES
FLUIDS
FUNCTIONS
GASES
HELIUM
HYDROGEN
LINE WIDTHS
MOLECULE COLLISIONS
NONMETALS
PLANETARY ATMOSPHERES
POTENTIALS
RARE GASES
ROTATIONAL STATES
SPECTRA
SPECTRAL FUNCTIONS