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The 2000 Nuclear Data Sheets for A = 121 by T. Tamura, with literature cutoff date of July 1,1999 has been updated. The experimental results from various decays and reactions for A=121 mass chain have been compiled and evaluated. The nuclides covered in this evaluation are from {sup 121}Rh to {sup 121}Pr. The data are summarized and presented, together with adopted level schemes.
We report polarizability measurements of atomic cesium's 6d{sub 3/2} state. The scalar and tensor polarizabilities are determined from hyperfine-resolved Stark-shift measurements using two-photon laser-induced-fluorescence spectroscopy of an effusive beam. The resulting values are {alpha}{sub 0}=-5310(180)a{sub 0}{sup 3} and {alpha}{sub 2}=8650(260)a{sub 0}{sup 3}. In addition, our measurements yield the hyperfine coupling constants A=16.36(15) MHz and B=-0.7(8) MHz, which agree with previous measurements. We also present relativistic all-order calculations of both scalar and tensor polarizabilities. The resulting theoretical values, {alpha}{sub 0}=-5686(121)a{sub 0}{sup 3} and {alpha}{sub 2}=8750(82)a{sub 0}{sup 3}, are in agreement with the present experimental results.