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Is N = 40 magic? An analysis of ISOLTRAP mass measurements

  • C. Guénaut
  • G. Audi
  • D. Beck
  • K. Blaum
  • G. Bollen
  • P. Delahaye
  • F. Herfurth
  • A. Kellerbauer
  • H. -J. Kluge
  • D. Lunney
  • S. Schwarz
  • L. Schweikhard
  • C. Yazidjian
ENAM 2004

Abstract.

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 

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Copyright information

© Società Italiana di Fisica and Springer-Verlag 2005

Authors and Affiliations

  • C. Guénaut
    • 1
  • G. Audi
    • 1
  • D. Beck
    • 2
  • K. Blaum
    • 2
    • 3
  • G. Bollen
    • 4
  • P. Delahaye
    • 5
  • F. Herfurth
    • 2
  • A. Kellerbauer
    • 5
  • H. -J. Kluge
    • 2
  • D. Lunney
    • 1
  • S. Schwarz
    • 4
  • L. Schweikhard
    • 6
  • C. Yazidjian
    • 2
  1. 1.CSNSM-IN2P3-CNRSOrsay-CampusFrance
  2. 2.GSI, Planckstraße 1DarmstadtGermany
  3. 3.Institute of PhysicsJohannes Gutenberg-UniversityMainzGermany
  4. 4.NSCLMichigan State UniversityEast LansingUSA
  5. 5.CERNPhysics DepartmentSwitzerland
  6. 6.Ernst-Moritz-Arndt-UniversityInstitute of PhysicsGreifswaldGermany

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