Alternating parity bands in doubly odd 218Ac129 and octupole instability in the light actinide region
作者： ME Debray , AJ Kreiner , M Davidson , J Davidson , D Hojman
DOI: 10.1016/0375-9474(94)90008-6
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摘要: Abstract High-spin states of doubly odd 218 Ac1 129 have been investigated using in-beam α, γ and conversion electron spectroscopy techniques through the 209 Bi( 12(13) C,3(4)n) fusion-evaporation reactions. The level scheme Ac shows three interconnected, alternating parity structures, each one linked by strong El transitions. Two these bands are strikingly similar to known isotone 217 Ra this analogy is shown persist for pair 220 Ac, 219 Ra. relation between structure its neighbors thoroughly discussed showing that first signals octupole collectivity appear N = 129.
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