Increasing Property of B(M1)/B(E2) Ratios in πh11/2 νi 13/2 Bands of Rareearth Doubly Odd Nuclei

LU Jing-bin; LIU Yun-zuo; SUN Liang; YANG Dong; LIANG Guo-dong; WANG Shou-yu; MA Ying-yun; ZHAO Guang-yi; LI Xian-feng; CUI Xing-zhu; LI Ming-fei; HUO Jun-de; ZENG Guo-mo; ZHU Li-hua; WU Xiao-guang

doi:10.11804/NuclPhysRev.22.02.172

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Article Navigation > Nuclear Physics Review > 2005 > 22(2): 172-179

LU Jing-bin, LIU Yun-zuo, SUN Liang, YANG Dong, LIANG Guo-dong, WANG Shou-yu, MA Ying-yun, ZHAO Guang-yi, LI Xian-feng, CUI Xing-zhu, LI Ming-fei, HUO Jun-de, ZENG Guo-mo, ZHU Li-hua, WU Xiao-guang. Increasing Property of B(M1)/B(E2) Ratios in πh11/2 νi 13/2 Bands of Rareearth Doubly Odd Nuclei[J]. Nuclear Physics Review, 2005, 22(2): 172-179. doi: 10.11804/NuclPhysRev.22.02.172

Citation:

LU Jing-bin, LIU Yun-zuo, SUN Liang, YANG Dong, LIANG Guo-dong, WANG Shou-yu, MA Ying-yun, ZHAO Guang-yi, LI Xian-feng, CUI Xing-zhu, LI Ming-fei, HUO Jun-de, ZENG Guo-mo, ZHU Li-hua, WU Xiao-guang. Increasing Property of B(M1)/B(E2) Ratios in πh11/2 νi 13/2 Bands of Rareearth Doubly Odd Nuclei[J]. Nuclear Physics Review, 2005, 22(2): 172-179. doi: 10.11804/NuclPhysRev.22.02.172

Increasing Property of B(M1)/B(E2) Ratios in πh11/2 νi 13/2 Bands of Rareearth Doubly Odd Nuclei

doi: 10.11804/NuclPhysRev.22.02.172

1 Department of Physics, Jilin University, Changchun 130023, China 2 China Institute of Atomic Energy, Beijing 102413, China

Received Date: 1900-01-01
Rev Recd Date: 1900-01-01
Publish Date: 2005-06-20

Abstract

It is systematically observed that the B(M1)/B(E2) plots with the increasing of rotational frequency, behaves as a socalled parabolalike shape in the π h11/2 νi13/2 bands of rareearth doubly odd nuclei (i.e., the B(M1)/B(E2) ratios increase rapidly after a certain rotational frequency). Such a phenomenon is discussed based on the formula of magnetic dipole reduced transition probability deduced from the Cranking Shell Model and Particle Rotor Model respectively. It is pointed out that, the occurrence of this behavior is closely related to the alignment nature of the νi 13/2 quasineutron. The increasing of B(M1)/B(E2) occurring at large frequency approaching the second BC crossing can be understood as mainly resulted from the mixing of wave function with the 4 quasiparticle band caused by the band crossing. Insight into the angular momentum coupling scheme between the quasiparticles and collective core in the π h11/2 νi 13/2 structures of rare earth doubly odd nuclei is gained by analyzing the increasing behavior of B(M1)/B(E2) ratios occurring at low rotational frequency.
- high-spin state,
- odd-odd nucleus,
- electromagnetic transition property,
- alignment
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通讯作者: 陈斌, bchen63@163.com

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沈阳化工大学材料科学与工程学院沈阳 110142

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Increasing Property of B(M1)/B(E2) Ratios in πh11/2 νi 13/2 Bands of Rareearth Doubly Odd Nuclei

doi: 10.11804/NuclPhysRev.22.02.172

1 Department of Physics, Jilin University, Changchun 130023, China 2 China Institute of Atomic Energy, Beijing 102413, China

Received Date: 1900-01-01
Rev Recd Date: 1900-01-01
Publish Date: 2005-06-20

Key words:

Abstract: It is systematically observed that the B(M1)/B(E2) plots with the increasing of rotational frequency, behaves as a socalled parabolalike shape in the π h11/2 νi13/2 bands of rareearth doubly odd nuclei (i.e., the B(M1)/B(E2) ratios increase rapidly after a certain rotational frequency). Such a phenomenon is discussed based on the formula of magnetic dipole reduced transition probability deduced from the Cranking Shell Model and Particle Rotor Model respectively. It is pointed out that, the occurrence of this behavior is closely related to the alignment nature of the νi 13/2 quasineutron. The increasing of B(M1)/B(E2) occurring at large frequency approaching the second BC crossing can be understood as mainly resulted from the mixing of wave function with the 4 quasiparticle band caused by the band crossing. Insight into the angular momentum coupling scheme between the quasiparticles and collective core in the π h11/2 νi 13/2 structures of rare earth doubly odd nuclei is gained by analyzing the increasing behavior of B(M1)/B(E2) ratios occurring at low rotational frequency.

Citation:

LU Jing-bin, LIU Yun-zuo, SUN Liang, YANG Dong, LIANG Guo-dong, WANG Shou-yu, MA Ying-yun, ZHAO Guang-yi, LI Xian-feng, CUI Xing-zhu, LI Ming-fei, HUO Jun-de, ZENG Guo-mo, ZHU Li-hua, WU Xiao-guang. Increasing Property of B(M1)/B(E2) Ratios in πh11/2 νi 13/2 Bands of Rareearth Doubly Odd Nuclei[J]. Nuclear Physics Review, 2005, 22(2): 172-179. doi: 10.11804/NuclPhysRev.22.02.172