Shape coexistence in the light Po isotopes.
作者： A.M. Oros , K. Heyde , C. De Coster , B. Decroix , R. Wyss
DOI: 10.1016/S0375-9474(98)00602-2
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摘要: Abstract The systematics of the even light Po isotopes (N ⩽ 126) are studied in framework Particle-Core Model. strong perturbation very is interpreted as arising from interaction between regular and intruder structures. Results Potential Energy Surface (PES) calculations predictions Pairing Vibration Model support this interpretation. mixing structures within IBM-2 a simple two-state picture. Matrix elements their spin dependence extracted. ‘reconstructed systematics’ show coexistence spherical structure, which varies little with neutron number, an band, strongly lowered energy number approaches midshell. crossing two configurations takes place over few isotopes; band becomes ground-state configuration 192Po.
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