The seniority-and K-structures of the cranked single-j shell model wave functions are investigated in the particle-number-conserving formalism. With increasing rotational frequency ω, the seniority v-structure and th...The seniority-and K-structures of the cranked single-j shell model wave functions are investigated in the particle-number-conserving formalism. With increasing rotational frequency ω, the seniority v-structure and the K-structure of the low-lying bands become very complicated. For not too high ω (hω≤0.5 MeV) configurations with v=0, 2, 4 are dominant in the low-lying bands, while the v≥6 components are negligibly small. Components with various K-values (K≤10) involved in the low-lying bands are comparable, which indicates the deviation of the nuclear shape from axial symmetry is significant. The variation of the gap parameter and the spin alignment with ω are investigated.展开更多
<正> A quasi-spin model containing two kinds of interactions is proposed. Tbe exact solutionsof the model Hamiltonian on SU(2)×SU(2) basis, the ground-state phase transition and theK-structure of the wave f...<正> A quasi-spin model containing two kinds of interactions is proposed. Tbe exact solutionsof the model Hamiltonian on SU(2)×SU(2) basis, the ground-state phase transition and theK-structure of the wave functions are discussed. The effectivity of HF approximation isalso studied in this model.展开更多
文摘The seniority-and K-structures of the cranked single-j shell model wave functions are investigated in the particle-number-conserving formalism. With increasing rotational frequency ω, the seniority v-structure and the K-structure of the low-lying bands become very complicated. For not too high ω (hω≤0.5 MeV) configurations with v=0, 2, 4 are dominant in the low-lying bands, while the v≥6 components are negligibly small. Components with various K-values (K≤10) involved in the low-lying bands are comparable, which indicates the deviation of the nuclear shape from axial symmetry is significant. The variation of the gap parameter and the spin alignment with ω are investigated.
基金Project supported by the National Natural Science Foundation of China.
文摘<正> A quasi-spin model containing two kinds of interactions is proposed. Tbe exact solutionsof the model Hamiltonian on SU(2)×SU(2) basis, the ground-state phase transition and theK-structure of the wave functions are discussed. The effectivity of HF approximation isalso studied in this model.
