2022/02/26 by Chi Hong Yuen, Yuen, Chi Hong, Mehdi Ayouz +9
Physics and Astronomy · #Cold Atom Physics and Bose-Einstein Condensates #Advanced Chemical Physics Studies #Quantum, superfluid, helium dynamics
paper · pdf · doi:10.48550/arxiv.2202.13206
The tunneling reaction H2 + D- → HD + H- was studied in a recent experimental work at low temperatures (10, 19, and 23~K) by Endres \it et al., Phys. Rev. A \bf 95, 022706 (2017). An upper limit of the rate coefficient was found to be about 10-18 cm3/s. In the present study, reaction probabilities are determined using the ABC program developed by Skouteris \it et al., Comput. Phys. Commun. \bf 133, 128 (2000). The probabilities for ortho-H2 and para-H2 in their ground rovibrational states are obtained numerically at collision energies above 50~meV with the total angular momentum J = 0 - 15 and extrapolated below 50~meV using a WKB approach. Thermally averaged rate coefficients for ortho- and para-H2 are obtained; the largest one, for ortho-H2 is about 3.1×10-20 cm3/s, which agrees with the experimental results.