Close-Coupling Calculations of Spin-Polarized Hydrogen-Deuterium Collisions

Abstract
Close-coupling calculations on the atomic collisions at cryogenic energies in a 100-kG magnetic field between spin-polarized hydrogen (H↑) and deuterium (D↑) have demonstrated the resonant spin-flip process postulated by Stwalley and the importance of minimizing the presence of D↑ in the experimental preparations of bulk H↑ currently in progress. Other interesting features are presented and briefly discussed including multiple Ramsauer-Townsend effects and direct electron and nuclear single- and double-spin-flip processes.