Collectivity of the neutron-deficient odd yttrium isotopes
D Becurescu; G Cata; M Ivascu; N V Zamfir; C F Liang; P Paris; D Becurescu; Central Inst. of Phys., Bucharest, Romania; G Cata; Central Inst. of Phys., Bucharest, Romania; M Ivascu; Central Inst. of Phys., Bucharest, Romania; N V Zamfir; Central Inst. of Phys., Bucharest, Romania; C F Liang; Central Inst. of Phys., Bucharest, Romania; P Paris; Central Inst. of Phys., Bucharest, Romania
Журнал:
Journal of Physics G: Nuclear Physics
Дата:
1988-08-01
Аннотация:
Multishell IBFM-1 calculations are reported for the neutron-deficient odd yttrium isotopes (79-85), which give a good description of both the positive and negative parity levels known experimentally. An exchange force whose intensity varies with the mass number is required. This phenomenological variation reflects qualitatively the microscopic origin of the exchange term, and also points to possible systematics of the model parameters in the A approximately=80 region of the N<sub>p</sub>N<sub>n</sub> type.
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