Wobbling Rotation in Atomic Nuclei
会议名称：《第十三届全国核结构研讨会暨第九次全国“核结构与量子力学”专题讨论会》
会议日期：2010年
学科分类：08[工学] 0827[工学-核科学与技术] 082701[工学-核能科学与工程]
关 键 词：Wobbling motion Triaxial nuclei Superdeformation Shell model
摘 要：More general schemes of rotational motion suggested by classical mechanics are precession and wobbling,henceforth both are called *** wobbling motion in nuclei is an excitation mode associated with the rotational asymmetry,which was predicted in *** the wobbling mode is expected to be general for triaxial nuclei,it had never been realized in experimental high spin spectra until a clear evidence was found for Lu in *** only few Lu isotopes the wobbling bands are seen in spite of extensive searches in nearby *** recently,the wobbling mode has been observed for the first time rather Lu,namely in Ta,making this collective motion a more general *** is an essential point in the study of nuclear rotations to establish whether and how the collective wobbling is generated microscopically by the *** the present paper,the wobbling states are described microscopically by the Triaxial Projected Shell Model（TPSM）.The experimental wobbling bands in typical wobbler Lu have been well reproduced by the present *** using the calculated wave functions of the wobbling states,the components of the total angular momentum along the three principle axes fixed on the body of nucleus are calculated as functions of spin.A deep understanding of the wobbling motion in nuclei can be achieved by analyzing the calculated geometry of the angular momentum in the intrinsic *** similar TPSM calculations of the TSD states have been performed to study the wobbling excitation in the neighboring nucleus Lu,in which an extra neutron is added to a wobbler *** has been found that the wobbling structure in odd-odd Lu can be modified by the addition of the extra neutron in some degrees,but not destroyed completely,indicating the possibility for observing the wobbling bands in the odd-odd Lu *** calculated wobbling bands with the quanta nw=0 and 1 are the signature partner for each other,and it is shown that no signature inversion occu