Quadrupole collectivity in island-of-inversion nuclei 28,30Ne and 34,36Mg
Quadrupole collectivity in island-of-inversion nuclei 28,30Ne and 34,36Mg
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DOI：
10.1103/physrevc.89.054307
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发表时间：
2014-05
影响因子：
3.1
通讯作者：
S. Michimasa;Y. Yanagisawa;K. Inafuku;N. Aoi;Z. Elekes;Z. Fülöp;Y. Ichikawa;N. Iwasa;K. Kurita;M. Kurokawa;T. Machida;T. Motobayashi;Takashi Nakamura;T. Nakabayashi;M. Notani;H. Ong;T. Onishi;H. Otsu;H. Sakurai;M. Shinohara;T. Sumikama;S. Takeuchi;K. Tanaka;Y. Togano;K. Yamada;M. Yamaguchi;K. Yoneda
中科院分区：
文献类型：
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作者：
S. Michimasa;Y. Yanagisawa;K. Inafuku;N. Aoi;Z. Elekes;Z. Fülöp;Y. Ichikawa;N. Iwasa;K. Kurita;M. Kurokawa;T. Machida;T. Motobayashi;Takashi Nakamura;T. Nakabayashi;M. Notani;H. Ong;T. Onishi;H. Otsu;H. Sakurai;M. Shinohara;T. Sumikama;S. Takeuchi;K. Tanaka;Y. Togano;K. Yamada;M. Yamaguchi;K. Yoneda
用逆运动学的在束射线能谱方法，通过质子非弹性散射，研究了丰中子偶偶核和镁原子核在液氢靶上的四极集体性。通过测量退激射线，确定了这些原子核的第一态的角积分截面。利用扭曲波计算，从角度积分截面中提取变形长度。Ne(Fm)的形变长度比Mg(Fm)小，是富中子同位素中最大的四极集体。沿着镁同位素链，将镁和镁的变形长度分别推算为Bfm和fm。通过与理论计算结果的比较，讨论了四极形变在镁附近的演化。
The quadrupole collectivity of neutron-rich even-even neon and magnesium nuclei around,, andMg, was studied via proton inelastic scattering on a liquid hydrogen target by in-beam-ray spectroscopy in inverse kinematics. The angle-integrated cross sections for the firststates of these nuclei were determined by measuring de-excitationrays. The deformation lengths were extracted from the angle-integrated cross sections using distorted-wave calculations. The deformation length ofNe (fm) is smaller than that ofMg (fm), which exhibits the largest quadrupole collectivity among the neutron-richisotones. Along the magnesium isotopic chain, the deformation lengths ofMg andMg were deduced to befm andfm, respectively. The evolution of quadrupole deformation in the vicinity ofMg is discussed by comparing the present results with the theoretical calculations.