摘要: Abstract The literature has been surveyed for data pertaining to nuclei in the mass chain A = 121. Well over 200 papers and communications were considered, information approximately 100 included. cutoff date was end of February 1971. this are rather fragmentary. Few spin assignments firm. half-life 8-keV isomer 121 Sn is still very much doubt. characteristics levels Sb not yet well defined, but enhanced E2 component 66-keV transition between 0.57308 (1/2 + ) 0.50754 (3/2 may imply a large deformation. There seems be building cumulation evidence throughout region ≈ 100–140 indicating presence such deformation at about 500–1000 keV excitation. present compilation might serve as basis choosing definitive experiments that would augment our knowledge chain.
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