Collision-induced spin exchange of alkali-metal atoms with³He

Quantum theory of molecular collisions in a magnetic field: Efficient calculations based on the total angular momentum representation

“…While these interactions are typically weaker than those already included in Eqs. ( 2) and ( 19) (see, e.g., [80,81]), they can become substantial in the short-range collision complex region [82]. These interactions can be handled by evaluating their matrix elements in the TRAM basis, and will result in additional mixing between the states of different J r similar in form to the couplings induced by the magnetic dipole-dipole interaction as described below.…”