Rostock 2019 – wissenschaftliches Programm
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MO: Fachverband Molekülphysik
MO 23: Molecular Theory
MO 23.7: Vortrag
Freitag, 15. März 2019, 12:15–12:30, S HS 001 Biologie
Low temperature HD + ortho-/para-H2 and HD+H inelastic scattering of astrophysical interest — •Renat Sultanov — 201 W. University Blvd., Department of Mathematics and Engineering, Odessa College, Wood Building of Math and Science (WOOD) Room 213, Odessa, TX 79764
State-selected total cross sections and thermal rate coefficients are computed for the 4-atomic HD + H2 and 3-atomic HD+H rotational energy transfer collisions at low temperatures (T) of astrophysical interest: 5K < T < 500K. Together with the H2 + H2 and H2 + H collisions, the scattering processes with the participation of the HD molecule (D is deuterium) are of significant importance in the astrophysics of the early Universe, in terms of the modeling of pre-galactic clouds and planetary atmospheres [1]. In the 4-atomic case a precise H2-H2 potential energy surface (PES) from paper [2] has been modified and used. The modification procedure was developed in a recent paper [3]. A quantum-mechanical dynamical approach is applied in the current calculation. A comparison between our new results for HD + H2 and previous calculations [3,4,5] will be presented. The HD+H non-reactive scattering cross sections will also be presented and discussed.
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2. K. Patkowski at el., J. Chem. Phys. 129, 094304 (2008).
3. R.A. Sultanov at el., J. Phys. B49 015203 (2016).
4. D. R. Flower, J. Phys. B32, 1755 (1999).
5. J. Schaefer, Astron. Astrophys. Suppl. Ser. 85, 1101 (1990).