New Magic Number,N<mml:mspace/>=<mml:mspace/>16, near the Neutron Drip Line

2000/06/12 by A. Ozawa, T. Kobayashi, T. Suzuki +3 · 11 citations
Physics and Astronomy · Chemistry · #Nuclear physics research studies #Nuclear Physics and Applications #Advanced NMR Techniques and Applications

paper · doi:10.1103/physrevlett.84.5493

Abstract

We have surveyed the neutron separation energies (S_n) and the interaction cross sections (\ensuremathσ_I) for the neutron-rich p\ensuremath-sd and the sd shell region. Very recently, both measurements reached up to the neutron drip line, or close to the drip line, for nuclei of Z\ensuremath≤8. A neutron-number dependence of S_n shows clear breaks at N\phantom\rule0ex0ex=\phantom\rule0ex0ex16 near the neutron drip line (T_Z\ensuremath≥3), which shows the creation of a new magic number. A neutron-number dependence of \ensuremathσ_I shows a large increase of \ensuremathσ_I for N\phantom\rule0ex0ex=\phantom\rule0ex0ex15, which supports the new magic number. The origin of the new magic number is also discussed.

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