**AAS Meeting #193 - Austin, Texas, January 1999**

*Session 77. Astrophysical Processes and Computational Techniques*

Display, Friday, January 8, 1999, 9:20am-6:30pm, Exhibit Hall 1
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## [77.03] Quantum Mechanical Calculations of Rovibrational Transitions in He-H_{2} Collisions

*M. Vieira (University of Rochester), J.F. Babb, N. Balakrishnan (SAO)*

We present the results of quantum mechanical scattering
calculations of rovibrational transitions in ortho- and
para-H_{2} induced by collisions with He atoms. The
calculations were performed using a reliable potential
energy surface. Cross sections were obtained for kinetic
energies between 10^{-4} and 3 eV and for the temperature
range 100{\leq}T{\leq}4000 K. Comparisons are made with
previous calculations and with semi-classical calculations,
where available.

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