Collision-induced rototranslational absorption spectra of N2-N2 pairs for temperatures from 50 to 300 K. [Of Titan atmosphere]

Journal Article · Mon Dec 01 04:00:00 EST 1986 · Astrophys. J.; (United States)

DOI:https://doi.org/10.1086/164841· OSTI ID:6541327

Borysow, A; Frommhold, L

Existing laboratory measurements of the far-infrared collision-induced spectra of gaseous nitrogen at temperatures from 124 to 300 K are analyzed on the basis of quantum line shapes computed from a suitable, advanced isotropic potential and multipole-induced dipole functions. The input is chosen to represent most closely the measurements at all temperatures and over the full range of frequencies. Simple analytical expressions are specified which represent the spectral profiles closely. It is thus possible to reproduce the collision-induced absorption spectra of nitrogen effortlessly in seconds at temperatures from 50 to 300 K on small computers, even in the far wings which never have been modeled from a quantum formalism before. The work thus gives new and reliable spectral intensities and their temperature dependence for a detailed analysis of the Voyager IRIS spectra of Titan's atmosphere. 71 references.

• Research Organization: Texas Univ., Austin
• OSTI ID: 6541327
• Journal Information: Astrophys. J.; (United States), Journal Name: Astrophys. J.; (United States) Vol. 311; ISSN ASJOA
• Country of Publication: United States
• Language: English

Related Subjects

640107* -- Astrophysics & Cosmology-- Planetary Phenomena
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ABSORPTION SPECTRA
ATMOSPHERES
COLLISIONS
ELECTROMAGNETIC RADIATION
ELEMENTS
FAR INFRARED RADIATION
INFRARED RADIATION
INTERACTIONS
MOLECULE COLLISIONS
NITROGEN
NONMETALS
PAIR PRODUCTION
PLANETS
RADIATIONS
SATELLITE ATMOSPHERES
SATURN PLANET
SPECTRA
TEMPERATURE DEPENDENCE