Study of Coulomb Excitation with Radioactive Ion Beams
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摘要: 综述了利用中、高能放射性核束的库仑激发方法研究位于N=20和28主壳隙附近的丰中子核结构所取得的进展.系统的实验结果清晰地表明,在离开β稳定线区域时N=20兰壳隙突然消失和N=28主壳隙的减弱过程.提出了利用兰州放射性束流线开展双幻核Ni50附近核素的低位能级核结构研究的构想. The study of coulomb excitation of the neutron-rich nuclei around N=20 and 28 shell closure with radioactive ion beam at intermediate energy is reviewed. The systematics of the measured energy of the 2+1 state shows that the N=20 shell closure in neutron-rich isotopes with Z≤12 disappears suddenly and N=28 shell elosure appears to be weak for 44S.The coulomb excitation studies of the exotic nuclei around the double magic 7828Ni50 at RIBLL are proposed.Abstract: The study of coulomb excitation of the neutron-rich nuclei around N=20 and 28 shell closure with radioactive ion beam at intermediate energy is reviewed. The systematics of the measured energy of the 2+1 state shows that the N=20 shell closure in neutron-rich isotopes with Z≤12 disappears suddenly and N=28 shell elosure appears to be weak for 44S.The coulomb excitation studies of the exotic nuclei around the double magic 7828Ni50 at RIBLL are proposed.
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Key words:
- coulomb excitation /
- neutron-rich /
- exotic nucleus /
- shell closure
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