摘要：
In this paper, based on the two-potential approach combining with the isospin dependent nuclear potential, we systematically compare the α preformation probabilities of odd-A nuclei between nuclear isomeric states and ground states. The results indicate that during the process of α particle preforming, the low lying nuclear isomeric states are similar to ground states. Meanwhile, in the framework of single nucleon energy level structure, we find that for nuclei with nucleon number below the magic numbers, the α preformation probabilities of high-spin states seem to be larger than low ones. For nuclei with nucleon number above the magic numbers, the α preformation probabilities of isomeric states are larger than those of ground states.
期刊：
Chinese Physics. C,2018年42(4):044102-1-044102-5 ISSN：1674-1137
通讯作者：
Wu, Xi-Jun
作者机构：
[Li, Xiao-Hua; Zhao, Jie-Cheng; Deng, Jun-Gang; Chen, Jiu-Long] Univ South China, Sch Nucl Sci & Technol, Hengyang 421001, Peoples R China.;[Wu, Xi-Jun] Univ South China, Sch Math & Phys, Hengyang 421001, Peoples R China.;[Li, Xiao-Hua] Univ South China, Cooperat Innovat Ctr Nucl Fuel Cycle Technol & Eq, Hengyang 421001, Peoples R China.;[Li, Xiao-Hua] Hunan Normal Univ, Key Lab Low Dimens Quantum Struct & Quantum Contr, Changsha 410081, Hunan, Peoples R China.
通讯机构：
[Wu, Xi-Jun] Univ South China, Sch Math & Phys, Hengyang 421001, Peoples R China.
关键词：
a decay;~(296)Og;hindrance factor;two-potential approach
摘要：
The present work is a continuation of our previous paper [J.-G. Deng, et al., Chin. Phys. C, 41: 124109 (2017)]. In the present work, the a decay half-life of the unknown nucleus 2960g is predicted within the two-potential approach and the hindrance factors of all 20 even-even nuclei in the same region as ~(296)Og, i.e. proton number 82<Z<126 and neutron number 152<N<184, from ~(250)Cm to ~(294)Og, are extracted. The prediction is 1.09 ms within a factor of 5.12. In addition, based on the latest experimental data, a new set of parameters of a decay hindrance factors for the even-even nuclei in this region, considering the shell effect and proton-neutron interaction, are obtained.
摘要：
The α decay half-life of the unknown nucleus ~(297)Og is predicted within the two-potential approach, and α preformation probabilities of 64 odd-A nuclei in the region of proton numbers 82<Z< 126 and neutron numbers 152<N<184, from ~(251)Cf to ~(295)Og, are extracted. In addition, based on the latest experimental data, a new set of parameters for α preformation probabilities considering the shell effect and proton-neutron interaction are obtained. The predicted α decay half-life of ~(297)Og is 0.16 ms within a factor of 4.97. The predicted spin and parity of the ground states for ~(269)Sg, ~(285)Fl and ~(293)Lv are 3/2~+,3/2~+ and 5/2~+,respectively.
摘要：
The morphology and orientation of the growth twins formed in the cast Mg-Zn-Cu-Zr alloys aged at 100 ℃ were characterized using optical microscopy and transmission electron microscopy. It was found that twins were invisible in the as-cast or solutionized Mg-Zn-Cu-Zr alloys while {1012} twins were exclusively formed in the aged condition. The twinning behavior was significantly affected by two factors, namely, the Zn content and the heat treatment process. A possible formation mechanism of such growth twins was discussed using the viewpoint of vacancy.
期刊：
Chinese Physics C,2015年39(5): 053101-1-053101-3 ISSN：1674-1137
通讯作者：
Zhang, ZH
作者机构：
[Zhang Zhen-Hua] Univ South China, Sch Nucl Sci & Technol, Hengyang 421001, Peoples R China.;[Zhang Zhen-Hua; Lu, Gang] Univ South China, Cooperat Innovat Ctr Nucl Fuel Cycle Technol & Eq, Hengyang 421001, Peoples R China.;[Lu, Gang; Wei Ke-Wei] Henan Univ Technol, Coll Sci, Zhengzhou 450001, Peoples R China.;[Wei Ke-Wei] Anyang Normal Univ, Coll Phys & Elect Engn, Anyang 455002, Peoples R China.
通讯机构：
[Zhang, ZH ] Univ South China, Sch Nucl Sci & Technol, Hengyang 421001, Peoples R China.;Univ South China, Sch Nucl Sci & Technol, Hengyang 421001, Peoples R China.
关键词：
X（3872）;mass degeneracy;B meson
摘要：
The spin is an important property of a particle. Although it is unlikely, there is still a possibility that two particles with different spins share similar masses. In this paper, we propose a method to probe this kind of mass degeneracy of particles with different spins. We use the cascade decay B+→X(3872)K+, X(3872)→D+D-to illustrate our method. It can be seen that the possible mass degeneracy of X(3872) can lead to interesting behavior in the corresponding cascade decay.
作者机构：
[王湘江; 毛燕; 王兴松] School of Mechanical Engineering, Southeast University, Nanjing 211189, China;[王湘江] College of Mechanical Engineering, University of South China, Hengyang 421001, China
通讯机构：
School of Mechanical Engineering, Southeast University, China
作者机构：
[柏兴旺] School of Mechanical Engineering, University of South China, Hengyang, China;[王桂兰] School of Material Science and Engineering, Huazhong University of Science and Technology, Wuhan, China;[张海鸥; 周祥曼] School of Mechanical Science and Engineering, Huazhong University of Science and Technology, Wuhan, China
通讯机构：
School of Mechanical Engineering, University of South China, Hengyang, China
