Measurement of excited states in (40)Si and evidence for weakening of the N=28 shell gap.
Measurement of excited states in (40)Si and evidence for weakening of the N=28 shell gap.
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DOI：
10.1103/physrevlett.97.112501
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发表时间：
2006-08
影响因子：
8.6
通讯作者：
C. Campbell;N. Aoi;D. Bazin;M. Bowen;B. A. Brown;J. Cook;D. Dinca;A. Gade;T. Glasmacher;M. Horoi;S. Kanno;T. Motobayashi;W. Mueller;H. Sakurai;K. Starosta;H. Suzuki;S. Takeuchi;J. R. Terry;K. Yoneda;H. Zwahlen
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文献类型：
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作者：
C. Campbell;N. Aoi;D. Bazin;M. Bowen;B. A. Brown;J. Cook;D. Dinca;A. Gade;T. Glasmacher;M. Horoi;S. Kanno;T. Motobayashi;W. Mueller;H. Sakurai;K. Starosta;H. Suzuki;S. Takeuchi;J. R. Terry;K. Yoneda;H. Zwahlen
通过探测与液氢靶上的非弹性散射和核子去除反应相一致的γ射线，建立了（40）Si的激发态。2（1）（+）态的低激发能（986（5）keV）提供了证据，表明在缺乏变形驱动质子集体的富中子核中，N=28壳层闭合减弱。
Excited states in (40)Si have been established by detecting gamma rays coincident with inelastic scattering and nucleon removal reactions on a liquid hydrogen target. The low excitation energy, 986(5) keV, of the 2(1)(+) state provides evidence of a weakening in the N=28 shell closure in a neutron-rich nucleus devoid of deformation-driving proton collectivity.