Complete structure determination of the astrophysically important nucleus 20Na below the proton threshold
Complete structure determination of the astrophysically important nucleus 20Na below the proton threshold
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DOI：
10.1016/j.physletb.2004.03.090
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发表时间：
2004-06
影响因子：
4.4
通讯作者：
D. Seweryniak;P. Woods;B. Blank;M. Carpenter;T. Davinson;S. Freeman;J. Görres;A. Heinz;R. Janssens;H. Mahmud;T. Khoo;Zhong Liu;G. Mukherjee;E. Rehm;F. Sarazin;J. Shergur;M. Shawcross;S. Sinha;A. Woehr
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文献类型：
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作者：
D. Seweryniak;P. Woods;B. Blank;M. Carpenter;T. Davinson;S. Freeman;J. Görres;A. Heinz;R. Janssens;H. Mahmud;T. Khoo;Zhong Liu;G. Mukherjee;E. Rehm;F. Sarazin;J. Shergur;M. Shawcross;S. Sinha;A. Woehr
利用聚变-蒸发反应10 B（12 C，2n）首次观测到了位于质子滴线附近的天体物理重要核20 Na的束内γ衰变。所有低于质子阈值的20 Na的状态都在实验中被填充和识别。这些包括新的水平，以前未解决的水平，并以改进的能量精度定位的状态。20 Na的能级结构及其γ跃迁与在本实验中同时测量的镜像伙伴20 F进行了比较。特别是，一个高度的能量稳定性被发现为所有负宇称态。这些结果进行了讨论的背景下，核壳模型。
The fusion–evaporation reaction10B(12C,2 n ) was used to make the first observation of in-beam γ decays from the astrophysically important nucleus20Na, lying adjacent to the proton drip-line. All states below the proton threshold in20Na were populated and identified in the experiment. These include new levels, previously unresolved levels, and states located with improved energy precision. The level structure of20Na, and its γ transitions, are compared to the mirror partner20F measured simultaneously in this experiment. In particular, a high degree of energy stability is found for all negative parity states. These results are discussed in the context of the nuclear shell model.