Level-crossing spectroscopy of the 7, 9, and 10D_5∕2 states of ¹³³Cs and validation of relativistic many-body calculations of the polarizabilities and hyperfine constants

We present an experimental and theoretical investigation of the polarizabilities and hyperfine constants of D_J states in ¹³³Cs for J=3∕2 and 5∕2. Experimental values for the hyperfine constant A are obtained from level-crossing signals of the (7,9,10)D_5∕2 states of ¹³³Cs and precise calculations of the tensor polarizabilities α₂. The results of relativistic many-body calculations for scalar and tensor polarizabilities of the (5–10)D_3∕2 and (5–10)D_5∕2 states are presented and compared with measured values from the literature. Calculated values of the hyperfine constants A for these states are also presented and checked for consistency with experimental values.