NUCL 124 |
| A fissioning nucleus allows for the study of the most deformed nuclear objects found in nature. Because the fission saddle configuration represents a stationary point at which the probability to fission is determined, it is able to sustain its own spectroscopy. The zeroth order spectroscopy manifests itself through the fission barrier, which can be thought of as a measure of the mass of the saddle-point shape. Consequently, the physics describing the saddle point masses should be similar to that of the ground state. In principal, one should be able to explore the shape dependence of pairing, the determination of shell effects at the saddle, the shape dependence of the Congruence Energy (the Wigner term in the nuclear masses), the single particle level density at the saddle, etc. In this talk, I present a new analysis which provides a determination of the fission barriers and ground state shell effects in the Pb region with nearly spectroscopic accuracy. The improved accuracy achieved in this analysis may lead to a future detailed exploration of the saddle mass surface with radioactive beams. |
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Nuclear Structure and Reactions in the Era of Radioactive Beams
8:30 AM-11:50 AM, Wednesday, August 22, 2007 Boston Park Plaza -- Lexington Room, Oral
Division of Nuclear Chemistry & Technology |