稀土区奇奇核πh1／2×vi13／2带B（M1）／B（E2）比值增强特性

陆景彬; 刘运祚; 孙亮; 杨东; 梁国栋; 王守宇; 马英君; 赵广义; 李险峰; 崔兴柱; 李明非; 霍俊德; 曾国模; 竺礼华; 吴晓光

doi:10.11804/NuclPhysRev.22.02.172

留言板

尊敬的读者、作者、审稿人, 关于本刊的投稿、审稿、编辑和出版的任何问题, 您可以本页添加留言。我们将尽快给您答复。谢谢您的支持!

姓名
邮箱
手机号码
标题
留言内容
验证码

稀土区奇奇核πh1／2×vi13／2带B（M1）／B（E2）比值增强特性

陆景彬, 刘运祚, 孙亮, 杨东, 梁国栋, 王守宇, 马英君, 赵广义, 李险峰, 崔兴柱, 李明非, 霍俊德, 曾国模, 竺礼华, 吴晓光

文章导航 > 原子核物理评论 > 2005 > 22(2): 172-179

陆景彬, 刘运祚, 孙亮, 杨东, 梁国栋, 王守宇, 马英君, 赵广义, 李险峰, 崔兴柱, 李明非, 霍俊德, 曾国模, 竺礼华, 吴晓光. 稀土区奇奇核πh1／2×vi13／2带B（M1）／B（E2）比值增强特性[J]. 原子核物理评论, 2005, 22(2): 172-179. doi: 10.11804/NuclPhysRev.22.02.172

引用本文:

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

稀土区奇奇核πh1／2×vi13／2带B（M1）／B（E2）比值增强特性

doi: 10.11804/NuclPhysRev.22.02.172

[1]吉林大学物理学院,吉林长春130023[2]中国原子能科学研究院,北京102413

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

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

摘要: 在稀土区奇奇核πh1／2×vi13／2转动带中，系统地观测到随转动频率或角动量增加，B(M1)／B(E2)曲线表现出所谓parabola-1ike形状，即在增加到某一转动频率或自旋后，B(M1)／B(E2)比值快速增强。基于推转模型和粒子转子模型关于奇奇核二准粒子转动带磁偶极约化跃迁几率的描述，对稀土区双奇核的这一行为进行了讨论。指出该现象的发生与vi13/2准中子转动顺排特性密切相关。B(M1)／B(E2)比值在接近第二带交叉(即BC准中子对顺排)的较高频率处的增强效果，可以理解为主要来源于带交叉引起的波函数中混合四准粒子成分的结果。通过对B(M1)/B(E2)比值的增强效果发生在较低频率处的分析，对稀土区奇奇核πh1／2×vi13／2带角动量耦合图像有了进一步认识。
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.
- 高自旋态 /
- 奇奇核 /
- 电磁跃迁特性 /
- 顺
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

点击查看大图

计量

文章访问数: 3049
HTML全文浏览量: 134
PDF下载量: 598
被引次数: 0

稀土区奇奇核πh1／2×vi13／2带B（M1）／B（E2）比值增强特性

doi: 10.11804/NuclPhysRev.22.02.172

[1]吉林大学物理学院,吉林长春130023[2]中国原子能科学研究院,北京102413

收稿日期: 1900-01-01
修回日期: 1900-01-01
刊出日期: 2005-06-20

关键词:

高自旋态 /

奇奇核 /

电磁跃迁特性 /

顺

摘要: 在稀土区奇奇核πh1／2×vi13／2转动带中，系统地观测到随转动频率或角动量增加，B(M1)／B(E2)曲线表现出所谓parabola-1ike形状，即在增加到某一转动频率或自旋后，B(M1)／B(E2)比值快速增强。基于推转模型和粒子转子模型关于奇奇核二准粒子转动带磁偶极约化跃迁几率的描述，对稀土区双奇核的这一行为进行了讨论。指出该现象的发生与vi13/2准中子转动顺排特性密切相关。B(M1)／B(E2)比值在接近第二带交叉(即BC准中子对顺排)的较高频率处的增强效果，可以理解为主要来源于带交叉引起的波函数中混合四准粒子成分的结果。通过对B(M1)/B(E2)比值的增强效果发生在较低频率处的分析，对稀土区奇奇核πh1／2×vi13／2带角动量耦合图像有了进一步认识。
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.

English Abstract

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

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

Keywords:

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.

引用本文:

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