【摘 要】
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By using a microscopic sdIBM-2+2q.p. approach which is the phenomenological core plus two-quasi-particle model and the experimental single-particle energies, th
【机 构】
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Department of Physics
【基金项目】
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Supported by the Science Foundation of the Science-Technology Department of Guizhou Province, China
论文部分内容阅读
By using a microscopic sdIBM-2+2q.p. approach which is the phenomenological core plus two-quasi-particle model and the experimental single-particle energies, the levels of the ground-band, β-band, γ-band,and partial two-quasi-particle states on 64～68 Ge isotopes are successfully reproduced. Based on the phenomenological model and microscopic approach, it has been deduced that no s-boson in the nucleus is breaking up and aligning; and that when one d-boson does, the minimum aligned energy can be calculated. This paper explicitly indicates that, with the increase of neutron number, an evolution process of PPT objectes, i.e. from the two-quasi-proton states (on 64 Ge nucleus) to the two-quasi-neutron states (on 68 Ge nucleus) may take place in even Ge isotopes.
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