Physics – Nuclear Physics – Nuclear Experiment
Scientific paper
2008-10-28
Physics
Nuclear Physics
Nuclear Experiment
Xiaofeng Wang's Ph.D thesis (305 pages), University of Notre Dame, December 2007;, Umesh Garg and Robert V. F. Janssens (advis
Scientific paper
In this thesis work, two topics, triaxiality and reflection asymmetry, have been discussed. Band structures in $^{163}$Tm were studied in a "thin" target experiment as well as in a DSAM lifetime measurement. Two new excited bands were shown to be characterized by a deformation larger than that of the yrast sequence. These structures have been interpreted as Triaxial Strongly Deformed bands associated with particle-hole excitations, rather than with wobbling. Moreover, the Tilted-Axis Cranking calculations provide a natural explanation for the presence of wobbling bands in the Lu isotopes and their absence in the neighboring Tm, Hf and Ta nuclei. A series of so-called "unsafe" Coulomb excitation experiments as well as one-neutron transfer measurements was carried out to investigate the role of octupole correlations in the $^{238,240,242}$Pu isotopes. Some striking differences exist between the level scheme and deexcitation patterns seen in $^{240}$Pu, and to a lesser extent in $^{238}$Pu, and those observed in $^{242}$Pu and in many other actinide nuclei such as $^{232}$Th and $^{238}$U, for example. The differences can be linked to the strength of octupole correlations, which are strongest in $^{240}$Pu. Further, all the data find a natural explanation within the recently proposed theoretical framework of octupole condensation.
No associations
LandOfFree
Exotic Collective Excitations at High Spin: Triaxial Rotation and Octupole Condensation does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Exotic Collective Excitations at High Spin: Triaxial Rotation and Octupole Condensation, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Exotic Collective Excitations at High Spin: Triaxial Rotation and Octupole Condensation will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-485510