dc.creator Picard-Bersellini, A. en_US dc.creator Charneau, R. en_US dc.creator Brechignac, Ph. en_US dc.date.accessioned 2006-06-15T14:34:09Z dc.date.available 2006-06-15T14:34:09Z dc.date.issued 1980 en_US dc.identifier 1980-TA-9 en_US dc.identifier.uri http://hdl.handle.net/1811/11339 dc.description 1-Ph. Brechignac, A. Picard-Bersellini, R. Charneau and J. M. Launay, Chem. Phys, (to be published) 2-Kraemer, Internat. Symposium on Molecular Beams (1979), and private comm. en_US dc.description Author Institution: en_US dc.description.abstract Low temperature studies of the pressure-broadening of infrared lines is limited by the smallness of the vapor pressure of most compounds when cooled, resulting in an absorption spectrum made of sharp lines, whose widths are difficult to measure. The very high resolution of the tunable diode lasers makes this kind of measurements feasible. Using a newly designed liquid-nitrogen-cooled absorption cell, the collision-broadening of $CO(v=1\leftarrow 0)$ infrared lines has been investigated, when perturbed by molecular $H_{2}$ and the light noble gases He, Ne. $CO-H_{2}$ results will be discussed in connection to previous double resonance measurements and calculations of inelastic cross $sections^{(1)}$, as well as astrophysical implications. CO-He results will be compared to the cross sections derived from a recently obtained high accuracy ab initio potential energy $surface^{(2)}$ by close-coupling calculations. en_US dc.format.extent 132864 bytes dc.format.mimetype image/jpeg dc.language.iso English en_US dc.publisher Ohio State University en_US dc.title LOW TEMPERATURE MEASUREMENTS OF PRESSURE BROADENING IN $CO(v=1\leftarrow 0)$ USING A TUNABLE DIODE LASER en_US dc.type article en_US
﻿