Cj. Erickson et al., Spin relaxation resonances due to the spin-axis interaction in dense rubidium and cesium vapor, PHYS REV L, 85(20), 2000, pp. 4237-4240
Resonances in the magnetic decoupling curves for the spin relaxation of den
se alkali-metal vapors prove that much of the relaxation is due to the spin
-axis interaction in triplet dimers. Initial estimates of the spin-axis cou
pling coefficients for the dimers (likely accurate to a factor of 2) are \l
ambda\/h = 290 MHz for Rb; 2500 MHz for Cs.