Resonances at very low temperature for the reaction D2 + H

We present numerical results for rate coefficients of reaction and vibrational quenching in the collision of H with D-2(v, j) at cold and ultracold temperatures. We explore both ortho-D-2(j = 0) and para-D-2(j = 1) for several initial vibrational states (v <= 5), and find resonant structures in the energy range 0.01-10. K, which are sensitive to the initial rovibrational state (v, j). We compare the reaction rates for D-2 + H with our previously obtained results for the isotopologue reaction H-2 + D, and discuss the implications of our detailed study of this benchmark system for ultracold chemistry.