Bonn 2010 – wissenschaftliches Programm
HK 42.2: Vortrag
Donnerstag, 18. März 2010, 14:15–14:30, HG II
Structure of Ba with N ∼90 and Ra with N∼132 from high precision mass measurements of 136−146Xe and 223−229Rn — •R. Burcu Cakirli1 and Rick Casten2 — 1Max-Planck-Institut für Kernphysik, D-69117 Heidelberg, Germany — 2Wright Nuclear Structure Laboratory, Yale University, New Haven, Connecticut 06520-8120, USA
Recent 136−146Xe and 223−229Rn atomic mass results from the double Penning trap mass spectrometer ISOLTRAP at ISOLDE-CERN will be presented [1-2]. These new results include the first measurements on 144−146Xe and 223−229Rn (including the first identification of 229Rn). Proton-neutron interaction strengths, δVpn, extracted from these new atomic mass results, double differences of binding energies, will be shown for both the N∼90 and N∼132 regions, in particular for Ba and Ra. Structural effects will be discussed considering the δVpn results. A unique pattern was identified in both regions. In addition, microscopic density functional theory predictions for δVpn will be compared with the experimental results.
 D. Neidherr et al., Phys. Rev. Lett., 102, 112501 (2009).
 D. Neidherr, R.B. Cakirli et al., Phys. Rev. C 80, 044323 (2009).