Investigation of the 1-0 pressure-induced vibrational absorption spectrum of hydrogen at temperatures below ambient

Details Investigation of the 1-0 pressure-induced vibrational absorption spectrum of hydrogen at temperatures below ambient Investigation of the 1-0 pressure-induced vibrational absorption spectrum of hydrogen at temperatures below ambient

Mar 1981

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981jqsrt..25..237g&link_type=abstract

Journal of Quantitative Spectroscopy and Radiative Transfer, vol. 25, Mar. 1981, p. 237-248.

Physics

11

Absorption Spectra, H Lines, Intermolecular Forces, Low Temperature, Pressure Broadening, Vibrational Spectra, Lennard-Jones Gas, Line Shape, Morse Potential, Spectral Bands, Spectral Line Width, Temperature Dependence, Van Der Waals Forces

Scientific paper

A theoretical fit has been made to laboratory measurements of the 1-0 collisionally induced H2 absorption band over a temperature range of 100-273 K and for densities up to 22 amagats. Both the Birnbaum-Cohen and the MacTaggert-Hunt line shape profiles were used. In addition, an intermolecular potential of either a Lennard-Jones 6-12 or a Morse-spline-van der Waals has been used for each line shape. The best fit resulted in a chi-square of 5%. Line widths have also been derived as a function of temperature. The lifetimes of the states were calculated.

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