Quantum design using a multiple internal reflections method in a study of fusion processes in the capture of alpha-particles by nuclei
文献类型：期刊论文
| 作者 | Maydanyuk, Sergei P.1,2; Zhang, Peng-Ming1 ; Belchikov, Sergei V.2
|
| 刊名 | NUCLEAR PHYSICS A
 |
| 出版日期 | 2015-08-01 |
| 卷号 | 940页码:89-118 |
| 关键词 | Alpha-capture Tunneling Multiple internal reflections Fusion probabilities Sharp angular momentum cut off Alpha-decay |
| ISSN号 | 0375-9474 |
| DOI | 10.1016/j.nuclphysa.2015.04.002 |
| 英文摘要 | A high precision method to determine fusion in the capture of a-particles by nuclei is presented. For a-capture by Ca-40 and Ca-44, such an approach gives (1) the parameters of the a nucleus potential and (2) fusion probabilities. This method found new parametrization and fusion probabilities and decreased the error by 41.72 times for alpha + Ca-40 and 34.06 times for alpha + Ca-44 in a description of experimental data in comparison with existing results. We show that the sharp angular momentum cutoff proposed by Glas and Mosel is a rough approximation, Wong's formula and the Hill-Wheeler approach determine the penetrability of the barrier without a correct consideration of the barrier shape, and the WKB approach gives reduced fusion probabilities. Based on our fusion probability formula, we explain the difference between experimental cross-sections for alpha + Ca-40 and alpha + (44)ca, which is connected with the theory of coexistence of the spherical and deformed shapes in the ground state for nuclei near the neutron magic shell N = 20. To provide deeper insight into the physics of nuclei with the new magic number N = 26, the cross-section for alpha + Ca-46 is predicted for future experimental tests. The role of nuclear deformations in calculations of the fusion probabilities is analyzed. (C) 2015 Elsevier B.V. All rights reserved. |
| WOS关键词 | OPTICAL-MODEL POTENTIALS ; HALF-LIVES ; CLUSTER RADIOACTIVITY ; COULOMB BARRIER ; DEFORMED-NUCLEI ; CROSS-SECTIONS ; DECAY ; ENERGIES ; EMISSION ; HEAVY |
| 资助项目 | Major State Basic Research Development Program in China[2015CB856903] ; National Natural Science Foundation of China[11035006] ; National Natural Science Foundation of China[11175215] ; Chinese Academy of Sciences[2014FFJA0003] ; Institute of Modern Physics of Chinese Academy of Sciences |
| WOS研究方向 | Physics |
| 语种 | 英语 |
| WOS记录号 | WOS:000356127500005 |
| 出版者 | ELSEVIER SCIENCE BV |
| 资助机构 | Major State Basic Research Development Program in China ; National Natural Science Foundation of China ; Chinese Academy of Sciences ; Institute of Modern Physics of Chinese Academy of Sciences |
| 源URL | [http://119.78.100.186/handle/113462/39955]  |
| 专题 | 中国科学院近代物理研究所 |
| 通讯作者 | Maydanyuk, Sergei P. |
| 作者单位 | 1.Chinese Acad Sci, Inst Modern Phys, Lanzhou 730000, Peoples R China 2.Natl Acad Sci Ukraine, Inst Nucl Res, UA-03680 Kiev, Ukraine |
| 推荐引用方式 GB/T 7714 | Maydanyuk, Sergei P.,Zhang, Peng-Ming,Belchikov, Sergei V.. Quantum design using a multiple internal reflections method in a study of fusion processes in the capture of alpha-particles by nuclei[J]. NUCLEAR PHYSICS A,2015,940:89-118. |
| APA | Maydanyuk, Sergei P.,Zhang, Peng-Ming,&Belchikov, Sergei V..(2015).Quantum design using a multiple internal reflections method in a study of fusion processes in the capture of alpha-particles by nuclei.NUCLEAR PHYSICS A,940,89-118. |
| MLA | Maydanyuk, Sergei P.,et al."Quantum design using a multiple internal reflections method in a study of fusion processes in the capture of alpha-particles by nuclei".NUCLEAR PHYSICS A 940(2015):89-118. |
入库方式： OAI收割
来源：近代物理研究所
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