Unraveling the Stereodynamics of Cold Controlled HD − H 2 Collisions

摘要: Measuring inelastic rates with partial-wave resolution requires temperatures close to a Kelvin or below, even for the lightest molecule. In recent experiment, Perreault, Mukherjee, and Zare [Nat. Chem. 10, 561 (2018).NCAHBB1755-433010.1038/s41557-018-0028-5] studied collisional relaxation of excited HD molecules in v=1, j=2 state by para- ortho-H_{2} at temperature about 1 K, extracting angular distribution scattered j=0 state. By preparation molecules, control was demonstrated. Here, we report first-principles simulation that experiment which enables us attribute main features observed single L=2 shape resonance. Our results demonstrate important stereodynamical insights can be gained when numerically exact quantum scattering calculations are combined experimental few-partial-wave regime.