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Evidence for the extinction of the N = 20 neutron-shell closure for 32Mg from direct mass measurements

MPG-Autoren
http://pubman.mpdl.mpg.de/cone/persons/resource/persons37933

Simon,  Vanessa V.
TRIUMF, 4004 Wesbrook Mall, Vancouver;
Division Prof. Dr. Klaus Blaum, MPI for Nuclear Physics, Max Planck Society;

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Zitation

Chaudhuri, A., Andreoiu, C., Brunner, T., Chowdhury, U., Ettenauer, S., Gallant, A., et al. (2013). Evidence for the extinction of the N = 20 neutron-shell closure for 32Mg from direct mass measurements. Physical Review C, 88(5): 054317, pp. 1-5. doi:10.1103/PhysRevC.88.054317.


Zitierlink: http://hdl.handle.net/11858/00-001M-0000-0014-B0C0-5
Zusammenfassung
The “island of inversion” around 32Mg is one of the most important paradigms for studying the disappearance of the stabilizing “magicity” of a shell closure. We present the first Penning-trap mass measurements of the exotic nuclides 29−31Na and 30−34Mg, which allow precise determination of the empirical shell gap for 32Mg. The new value of 1.10(3) MeV is the smallest observed shell gap for any nuclide with a canonical magic number.