Large Shape Staggering in Neutron-Deficient Bi Isotopes.
Large Shape Staggering in Neutron-Deficient Bi Isotopes.
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DOI：
10.1103/physrevlett.127.192501
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发表时间：
2021-11
影响因子：
8.6
通讯作者：
A. Barzakh;A. Andreyev;C. Raison;J. Cubiss;P. Van Duppen;S. Péru;S. Hilaire;S. Goriely;B. Andel;S. Antalic;M. Al Monthery;J. Berengut;J. Bieroń;M. Bissell;A. Borschevsky;K. Chrysalidis;T. Cocolios;T. Day Goodacre;J. Dognon;M. Elantkowska;E. Eliav;G. Farooq-Smith;D. Fedorov;V. Fedosseev;L. Gaffney;R. F. Garcia Ruiz;M. Godefroid;C. Granados;R. Harding;R. Heinke;M. Huyse;J. Karls;P. Larmonier;J. G. Li-J. G.-Li-2109588676;K. Lynch;D. Maison;B. Marsh;P. Molkanov;P. Mošať;A. V. Oleynichenko;V. Panteleev;P. Pyykkö;M. Reitsma;K. Rezynkina;R. Rossel;S. Rothe;J. Ruczkowski;S. Schiffmann;C. Seiffert;M. Seliverstov;S. Sels;L. Skripnikov;M. Stryjczyk;D. Studer;M. Verlinde;S. Wilman;A. Zaitsevskii
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文献类型：
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作者：
A. Barzakh;A. Andreyev;C. Raison;J. Cubiss;P. Van Duppen;S. Péru;S. Hilaire;S. Goriely;B. Andel;S. Antalic;M. Al Monthery;J. Berengut;J. Bieroń;M. Bissell;A. Borschevsky;K. Chrysalidis;T. Cocolios;T. Day Goodacre;J. Dognon;M. Elantkowska;E. Eliav;G. Farooq-Smith;D. Fedorov;V. Fedosseev;L. Gaffney;R. F. Garcia Ruiz;M. Godefroid;C. Granados;R. Harding;R. Heinke;M. Huyse;J. Karls;P. Larmonier;J. G. Li-J. G.-Li-2109588676;K. Lynch;D. Maison;B. Marsh;P. Molkanov;P. Mošať;A. V. Oleynichenko;V. Panteleev;P. Pyykkö;M. Reitsma;K. Rezynkina;R. Rossel;S. Rothe;J. Ruczkowski;S. Schiffmann;C. Seiffert;M. Seliverstov;S. Sels;L. Skripnikov;M. Stryjczyk;D. Studer;M. Verlinde;S. Wilman;A. Zaitsevskii
均方电荷半径（相对于^{209}Bi）、磁偶极子和^{187，188，189，191}Bi的电四极矩的变化是使用ISOLDE（CERN）的源内共振电离光谱技术测量的。在^{187，188，189}Bi^{g}中发现了一个大的半径交错，表现为基态^{188}Bi相对于相邻的^{187，189}Bi^{g}的半径急剧增加。对于^{188}Bi^{m}也观察到大的异构体位移。这两种效应都发生在相同的中子数N=105时，在汞同位素中观察到形状交错和类似的异构体位移。实验结果再现平均场计算的地面或同质异能态被确定的阻塞准粒子配置与所观察到的自旋，奇偶校验，和磁矩。
The changes in the mean-square charge radius (relative to ^{209}Bi), magnetic dipole, and electric quadrupole moments of ^{187,188,189,191}Bi were measured using the in-source resonance-ionization spectroscopy technique at ISOLDE (CERN). A large staggering in radii was found in ^{187,188,189}Bi^{g}, manifested by a sharp radius increase for the ground state of ^{188}Bi relative to the neighboring ^{187,189}Bi^{g}. A large isomer shift was also observed for ^{188}Bi^{m}. Both effects happen at the same neutron number, N=105, where the shape staggering and a similar isomer shift were observed in the mercury isotopes. Experimental results are reproduced by mean-field calculations where the ground or isomeric states were identified by the blocked quasiparticle configuration compatible with the observed spin, parity, and magnetic moment.