Collision of Two Molecules of Hydrogen

Trajectories of two H2 molecules (blue + yellow and red + green) showing an inelastic collision causing vibrational and rotational excitation

Fundamental Potential Energy Surfaces involving H2

Follow this link to the H3 surface.

Follow this link to the H4 surface.

Follow this link to the He-H2 surface.

(not so recent) Recent Papers

Martin, P.G., Keogh, W.J. & Mandy, M.E., Collision-induced Dissociation of Molecular Hydrogen at Low Densities (postscript preprint 290Kb: ApJ in press)

Mandy, M.E., Martin, P.G., & Keogh, W.J., Collisional energy transfer in H2(v-ab, j-ab) + H2(v-cd, j-cd) (postscript preprint 3.2Mb: JCP, 108, 492, 1998)

Martin, P.G., Schwarz, D.H., & Mandy, M.E., Master Equation Studies of Collisional Excitation and Dissociation of H2 Molecules by H Atoms. Astrophysical Journal, 461, 265-281, 1996. The rate of cooling and other functions are available in electronic form in these web archives. Ancillary data on A values, tunneling rates, and H2 energy levels are also available in electronic form in these web archives.

Martin, P.G., & Mandy, M.E., Analytic Temperature Dependences for a Complete Set of Rate Coefficients for Collisional Excitation and Dissociation of H2 Molecules by H Atoms. Astrophysical Journal, 455, L63-L66, 1995. The rate coefficients are available in electronic form in these web archives.

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