Investigation of the 2-0 pressure-induced vibrational absorption spectrum of hydrogen at temperatures below ambient

Physics

Scientific paper

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Absorption Spectra, H Lines, Jupiter Atmosphere, Molecular Oscillations, Pressure Effects, Vibrational Spectra, Intermolecular Forces, Line Shape, Molecular Collisions, Molecular Spectroscopy, Radiative Lifetime, Spectral Line Width, Temperature Effects

Scientific paper

A theoretical fit has been made to our laboratory measurements of the 2-0 collisionally induced H2 absorption band for temperatures of 122 and 273.3 K and at a density of 20 amagats. A Lennard-Jones 6-12 intermolecular potential and a Birnbaum-Cohen line profile have been used. The fit resulted in a chi-square of 0.2%. Line widths have also been derived as a function of temperature. The lifetimes of the states have been calculated.

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