Abstract
With the double Penning-trap mass spectrometer ISOLTRAP at ISOLDE/CERN the masses of the neutron-rich isotopes were measured with a relative uncertainty of the order of to . In particular, the masses of were measured for the first time. These new mass values allow one to extend calculations of the mass surface in this region. Proton-Neutron interaction strength, obtained from double differences of binding energies, relate to subtle structural effects, such as the onset of octupole correlations, the growth of collectivity, and its relation to the underlying shell model levels. In addition, they provide a test of density functional calculations.
- Received 27 July 2009
DOI:https://doi.org/10.1103/PhysRevC.80.044323
©2009 American Physical Society