Bohr-Mottelson公式对超形变带的比较研究  

Research on superdeformed bands with Bohr-Mottelson's formulas

作　　者：叶剑[1] 方向正[1] 郭建友[1] 

机构地区：[1]安徽大学物理与材料科学学院

出　　处：《安徽大学学报（自然科学版）》2006年第4期57-60,共4页Journal of Anhui University(Natural Science Edition)

摘　　要：用Bohr-Mottelson的两参数、三参数和四参数公式对150区30条超形变带进行了系统分析.结果显示:三个公式都能较好地拟合150区超形变带的E2跃迁谱,而且带首自旋的确定基本一致.大部分带Bohr-Mottelson的三参数数值关系符合ab公式的理论预期值,小部分带的三参数数值关系符合Harris公式的理论预期值.一半以上带的四参数数值关系与ab公式的预期值接近,而与Harris公式的预期值偏离较大.表明两参数ab公式比Harris公式具有更广泛的实用性.The superdeformed bands in the 150 region are systemically analyzed by using Bohr - Mottelson two, three and four- parameter I（I ＋ 1 ） expansions. All results show that three formulas are reasonable to the description of superdeformed bands and agreement with the spin determination. The parameter - relation R1 for most of bands agrees the theoretical expected value of ab formula and the parameter - relation R1 for a part of bands agrees the theoretical expected value of Harris formula. The parameter - relation R3 for half bands deviates from the theoretical expected value of Harris two - parameter to2 expansion, but is closer to the theoreti- cal expected value of ab formula, which may indicate that the ab formula is superior to the Harris two - parameter to2 expansion.

关 键 词：超形变带 参数关系 I(I+1)展开 

分 类 号：O571.22[理学—粒子物理与原子核物理]