Cesium Transition Probabilities for Optical Pumping

Optical transition probabilities are presented between the several magnetic sublevels of the ${\mathrm{Cs}}^{133}$ ground state via the first excited state, given separately for the two fine-structure components. Graphs of the populations of representative states are presented as a function of the time the atoms are illuminated, and a table is given of the populations of atoms absorbing integral numbers of photons from both $D$ lines simultaneously, both polarized and unpolarized.