The spin, isotope shift and moments for the two-second isomer in '"Ba have been measured with a new ultrasensitive technique of laser spectroscopy. The results are in agreement with the prediction of the particle plus triarial rotor model with E ~= 0.23 and y = 18". RADiOA(3Ti'v'Il-r' ' " ' " B a from "ivlo("S, 2p2n2nj: measured ko:ope shifi and
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