Nuclear Structure of 186-194Pb Nuclei

Abstract

The positive parity energy levels of even-even 186-194Pb nuclei have been studied by using interacting boson model (IBM) with N0 bosons number. The interacting boson model with configuration mixing (IBM-CM), which takes into account the two-particle-two-hole (2p-2 h) excitations is applied. A sequence of (01+, 02+, 21+,……………) levels has been investigated, and compared with available data. According to this study, the 02+ states are N0+2 space. The electric quadruple transition probabilities between the levels are analyzed in decomposition which reveal the detailed nature of the energy levels. The results obtained are found in good agreement with recent experimental data. It was pointed out that interacting boson approximations are equitably reliable.