E2 Transition Probabilities for Decays of Isomers Observed in Neutron-rich Odd Sn Isotopes

High-spin states were investigated with gamma coincidence techniques in neutron-rich Sn isotopes produced in fission processes following Ca-48 + Pb-208, Ca-48 + U-238, and Ni-64 + U-238 reactions. By exploiting delayed and cross-coincidence techniques, level schemes have been delineated in odd Sn119-125 isotopes. Particular attention was paid to the occurrence of 19/2(+) and 23/2(+) isomeric states for which the available information has now been significantly extended. Reduced transition probabilities, B (E2), extracted from the measured half-lives and the established details of the isomeric decays exhibit a striking regularity. This behavior was compared with the previously observed regularity of the B (E2) amplitudes for the seniority nu = 2 and 3, 10(+) and 27/2(-) isomers in even-and odd-Sn isotopes, respectively.