Program - Brookhaven National Laboratory

enchmark for existing atomic mass predictions but affect also our understanding of some key phenomena
in nuclear technology. In this presentation a global picture on improved mass surface of neutron-rich nuclei
will be presented and discussed in the light of selected mass models and nuclear theories representing
different approached from simple extrapolations schemes to more sophisticated microscopic approaches. A
closer look on closed shell regions studied at JYFLTRAP will also be discussed as well as their connections
to nuclear data applications.
[1] A. Kankainen, J. Aysto ja A. Jokinen, J. Phys. G: Nucl. Part. Phys. 39 (2012) 093101
JA 3 11:20 AM
Mass Measurements of Short-lived Nuclei at HIRFL-CSR
M. Wang, H.S. Xu, Y.H. Zhang, X.L. Tu, X.H. Zhou, Y.J. Yuan, J.W. Xia, X.C. Chen, C.M. Du, P.
Geng, Z.G. Hu, W.X. Huang, S.L. Jin, L.X. Liu, Y. Liu, X. Ma, R.S. Mao, B. Mei, P. Shuai, Z.Y. Sun,
S.W. Tang, J.S. Wang, S.T. Wang, G.Q. Xiao, X. Xu, X.L. Yan, J.C. Yang, R.P. Ye, Y.D. Zang, H.W.
Zhao, T.C. Zhao, W. Zhang, X.Y. Zhang, W.L. Zhan, Institute of Modern Physics, Chinese Academy of
Sciences, Lanzhou 730000, People’s Republic of China. Y. Sun, Department of Physics, Shanghai Jiao
Tong University, Shanghai 200240, People’s Republic of China. Yu.A. Litvinov, S. Typel, GSI
Helmholtzzentrum für Schwerionenforschung, Planckstrasse 1, 64291 Darmstadt, Germany. K. Blaum,
Max-Planck-Institut für Kernphysik, Saupfercheckweg 1, 69117 Heidelberg, Germany. G. Audi,
CSNSM-IN2P3-CNRS, Université de Paris Sud, F-91405 Orsay, France. H. Schatz, B.A. Brown,
Department of Physics and Astronomy, National Superconducting Cyclotron Laboratory, Michigan State
University, East Lansing, Michigan 48824, USA. T. Yamaguchi, Department of Physics, Saitama
University, Saitama 338-8570, Japan. Y. Yamaguchi, RIKEN Nishina Center, RIKEN, Saitama
351-0198, Japan. H. Suzuki, Institute of Physics, University of Tsukuba, Ibaraki 305-8571, Japan.
Since commissioning in 2007, four campaigns of mass measurements for short-lived nuclei have been carried
out at the HIRFL-CSR (Cooler Storage Ring at the Heavy Ion Research Facility). The radioactive nuclei
were produced by projectile fragmentation and injected into the experimental storage ring CSRe, which
was set as an isochronous mass spectrometry. The revolution times of various ions stored in the CSRe
were measured, and masses of nuclei of interest deduced. Masses of fragments of 78Kr[1], 58Ni[2] and 86Kr
have been measured, for some of them for the first time. The resolving power of 170000-180000 has been
achieved in the experiments. The experimental results will be presented. Their impact on nucleosynthesis
in the rp process and nuclear structure will be discussed.
[1] X.L.Tu et al., Phys.Rev.Lett. 106, 112501 (2011) [2] Y.H.Zhang et al., Phys.Rev.Lett. 109, in press
(2012)
JA 4 11:40 AM
Precision Mass Measurements for Nuclear Physics Application and Metrology
J. Dilling
TRIUMF, 4004 Wesbrook Mall, Vancouver, B.C. Canada and Department of Physics and Astronomy,
University of British Columbia, Vancouver, BC, Canada
The understanding of the strong force and the nuclear interaction is on the forefront of today’s nuclear
research. More and more detailed theories are successfully used to describe an every increasing set of nuclei
on the Segre chart. To further refine the theoretical approaches, such as ab-initio or density functional
theories, one needs accurate and precise data to compare predictions to. One of the key quantities of an
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