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.
The American Astronomical Society (AAS), established 1899, is the major organization of professional astronomers in North America. The membership (~7,700) also includes physicists, mathematicians, geologists, engineers and others whose research interests lie within the broad spectrum of subjects now comprising contemporary astronomy. The mission of the American Astronomical Society is to enhance and share humanity's scientific understanding of the Universe. (1) The Society, through its publications, disseminates and archives the results of astronomical research. (2) The Society facilitates and strengthens the interactions among members through professional meetings and other means. (3) The Society represents the goals of its community of members to the nation and the world. (4) The Society, through its members, trains, mentors and supports the next generation of astronomers. (5) The Society assists its members to develop their skills in the fields of education and public outreach at all levels.
