Published September 15, 2006 | Version v1
Journal article

Measurement of Excited States in 40Si and Evidence for Weakening of the N=28 Shell Gap

  • 1. Department of Physics and Astronomy, Michigan State University, East Lansing, Michigan 48824 (United States)
  • 2. National Superconducting Cyclotron Laboratory, Michigan State University, East Lansing, Michigan 48824 (United States)
  • 3. The Institute of Physical and Chemical Research, 2-1 Hirosawa, Wako, Saitama 351-0198 (Japan)
  • 4. Physics Department, Central Michigan University, Mount Pleasant, Michigan 48859 (United States)
  • 5. Department of Physics, Rikkyo University, 3-34-1 Nishi-Ikebukuro, Toshima, Tokyo 171-8501 (Japan)
  • 6. Department of Physics, University of Tokyo, Tokyo 1130033 (Japan)

Description

Excited states in 40Si have been established by detecting γ rays coincident with inelastic scattering and nucleon removal reactions on a liquid hydrogen target. The low excitation energy, 986(5) keV, of the 21+ state provides evidence of a weakening in the N=28 shell closure in a neutron-rich nucleus devoid of deformation-driving proton collectivity

Additional details

Publishing Information

Journal Title
Physical Review Letters
Journal Volume
97
Journal Issue
11
Journal Page Range
p. 112501-112501.4
ISSN
0031-9007
CODEN
PRLTAO

Optional Information

Notes
(c) 2006 The American Physical Society