Excited states in neutron rich boron isotopes
Excited states in neutron rich boron isotopes
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DOI：
10.1016/j.physletb.2005.01.022
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发表时间：
2005-02
影响因子：
4.4
通讯作者：
R. Kanungo;Z. Elekes;H. Baba;Z. Dombrádi;Z. Fülöp;J. Gibelin;A. Horváth;Y. Ichikawa;E. Ideguchi;N. Iwasa;H. Iwasaki;S. Kawai;Y. Kondo;T. Motobayashi;M. Notani;T. Ohnishi;A. Ozawa;H. Sakurai;S. Shimoura;E. Takeshita;S. Takeuchi;I. Tanihata;Y. Togano;C. Wu;Y. Yamaguchi;Y. Yanagisawa;A. Yoshida;K. Yoshida
中科院分区：
文献类型：
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作者：
R. Kanungo;Z. Elekes;H. Baba;Z. Dombrádi;Z. Fülöp;J. Gibelin;A. Horváth;Y. Ichikawa;E. Ideguchi;N. Iwasa;H. Iwasaki;S. Kawai;Y. Kondo;T. Motobayashi;M. Notani;T. Ohnishi;A. Ozawa;H. Sakurai;S. Shimoura;E. Takeshita;S. Takeuchi;I. Tanihata;Y. Togano;C. Wu;Y. Yamaguchi;Y. Yanagisawa;A. Yoshida;K. Yoshida
本文给出了17B及其14、15B中子碎片经H_2靶散射后的在束伽马能谱新的实验结果。在1089±15keV处观察到17B的伽马相变。碎片15B被大量观察到与1336±10keV的伽马相变有关。这首次提出了17B的核心激发结构，从而为其结构提供了新的见解。文中还给出了12，14B的观测结果。该数据集提供了对富含中子的硼同位素的第一激发态的有用的系统研究，表明激发能量在N=8以后急剧下降。
New experimental results on in-beam gamma spectroscopy of neutron rich boron isotopes are presented for17B and its neutron removal fragments14,15B, after scattering with a H2target. A gamma transition for17B is observed at 1089±15 keV. The fragment15B is observed abundantly associated with a gamma transition of 1336±10 keV. This suggests for the first time a core-excited structure for17B thereby providing a new insight into its structure. Observations for12,14B are also presented. The data set provides a useful systematic study of first excited states of neutron rich boron isotopes showing the dramatic drop in excitation energy beyond N=8.