Precise Barriers and Shell Effects: a New Inroad to Fission Saddle Point Spectroscopy

Details Precise Barriers and Shell Effects: a New Inroad to Fission Saddle Point Spectroscopy Precise Barriers and Shell Effects: a New Inroad to Fission Saddle Point Spectroscopy

2003-03-06

arxiv.org/abs/nucl-ex/0303002v1

Physics

Nuclear Physics

Nuclear Experiment

10 pages, 3 figures

Scientific paper

Fission excitation functions have been measured for a chain of neighboring compound nuclei, from 207Po to 212Po. We present a new analysis which provides a determination of the fission barriers and ground state shell effects with nearly spectroscopic accuracy. The improved accuracy achieved in this analysis may lead to a future detailed exploration of the saddle mass surface and its spectroscopy. The sensitivity of the fission probabilities on shell effects extends to excitation energies of 150 MeV and negates recent claims for the disappearance of shell corrections due to collective effects.

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