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Q: Fachverband Quantenoptik und Photonik
Q 47: Cold Molecules and Cold Chemistry (joint session MO/Q)
Q 47.2: Vortrag
Mittwoch, 12. März 2025, 15:00–15:15, HS XVI
Low-energy collisions between two indistinguishable tritium-bearing hydrogen molecules: HT+HT and DT+DT — •Renat Sultanov — The University of Texas Permian Basin, Odessa, Texas, USA
Elastic and rotational energy transfer collisions between two tritium-containing hydrogen molecules are computed at low- and very low energies, down to ultra-cold temperatures: T≃ 10−8 K. A pure quantum-mechanical approach is applied. A high-quality global six-dimensional potential energy surface (PES) has been appropriately modified and used in these calculations. In the case of the symmetrical H2+H2 or D2+D2 collisions one can use the original H4 PES as it is, i.e. without transformations. However, in the case of the non-symmetrical (or symmetry-broken) HD+H2 / D2, HT+HT, DT+DT scattering systems one should also apply the original H4 potential (PES), but propagation (solution) of the Schrödinger equation runs (in this case) over the corrected Jacobi vector [1,2]. Elastic and state-selected inelastic cross sections and corresponding thermal rate coefficients will be presented.
1. R. A. Sultanov, D. Guster, S. K. Adhikari, Phys. Rev. A 85, 052702 (2012).
2. R. A. Sultanov, D. Guster, S. K. Adhikari, J. Phys. B 49 (2016) 015203.
Keywords: Hydrogen molecule; inelastic scattering; HT+HT, DT+DT; Cold collisions; H4 PES