https://doi.org/10.1140/epjad/i2005-06-029-9
ENAM 2004
Is N = 40 magic? An analysis of ISOLTRAP mass measurements
1
CSNSM-IN2P3-CNRS, 91405, Orsay-Campus, France
2
GSI, Planckstraße 1, 64291, Darmstadt, Germany
3
Institute of Physics, Johannes Gutenberg-University, 55099, Mainz, Germany
4
NSCL, Michigan State University, 48824-1321, East Lansing, MI, USA
5
CERN, Physics Department, 1211 Genève 23, Switzerland
6
Ernst-Moritz-Arndt-University, Institute of Physics, 17487, Greifswald, Germany
Received:
8
November
2004
Accepted:
18
February
2005
Published online:
20
April
2005
Recently high-precision mass measurements were performed on Ni, Cu, and Ga isotopes at the triple-trap mass spectrometer ISOLTRAP at ISOLDE/CERN. The relative uncertainty was of the order of 10-8. Data indicate a competition between the sub-shell closure N = 40 and the mid-shell region N = 39 between the well-known magic numbers N = 28 and N = 50.
PACS: 21.10.Dr Binding energies and masses – / 21.60.Cs Shell model – / 32.10.Bi Atomic masses, mass spectra, abundances, and isotopes –
© Società Italiana di Fisica and Springer-Verlag, 2005
