Non-Gaussian Fluctuations and Non-Markovian Effects in the Nuclear Fusion Process: Langevin Dynamics Emerging from Quantum Molecular Dynamics Simulations
文献类型：期刊论文
| 作者 | Wen, Kai1; Sakata, Fumihiko1,2; Li, Zhu-Xia3; Wu, Xi-Zhen3; Zhang, Ying-Xun3; Zhou, Shan-Gui1,4 |
| 刊名 | PHYSICAL REVIEW LETTERS
 |
| 出版日期 | 2013-07-02 |
| 卷号 | 111 |
| ISSN号 | 0031-9007 |
| DOI | 10.1103/PhysRevLett.111.012501 |
| 文献子类 | Article |
| 英文摘要 | Macroscopic parameters as well as precise information on the random force characterizing the Langevin-type description of the nuclear fusion process around the Coulomb barrier are extracted from the microscopic dynamics of individual nucleons by exploiting the numerical simulation of the improved quantum molecular dynamics. It turns out that the dissipation dynamics of the relative motion between two fusing nuclei is caused by a non-Gaussian distribution of the random force. We find that the friction coefficient as well as the time correlation function of the random force takes particularly large values in a region a little bit inside of the Coulomb barrier. A clear non-Markovian effect is observed in the time correlation function of the random force. It is further shown that an emergent dynamics of the fusion process can be described by the generalized Langevin equation with memory effects by appropriately incorporating the microscopic information of individual nucleons through the random force and its time correlation function. |
| WOS关键词 | HEAVY-ION COLLISIONS ; SUPERHEAVY NUCLEI ; DINUCLEAR SYSTEM ; MOTION ; NECK |
| 资助项目 | CAS[KJCX2-EW-N01] |
| WOS研究方向 | Physics |
| 语种 | 英语 |
| WOS记录号 | WOS:000321209200004 |
| 出版者 | AMER PHYSICAL SOC |
| 源URL | [http://119.78.100.186/handle/113462/48065]  |
| 专题 | 中国科学院近代物理研究所 |
| 通讯作者 | Wen, Kai |
| 作者单位 | 1.Chinese Acad Sci, Inst Theoret Phys, State Key Lab Theoret Phys, Beijing 100190, Peoples R China 2.Ibaraki Univ, Grad Sch Sci & Technol, Inst Appl Beam Sci, Mito, Ibaraki 3108512, Japan 3.China Inst Atom Energy, Beijing 102413, Peoples R China 4.Ctr Theoret Nucl Phys, Natl Lab Heavy Ion Accelerator, Lanzhou 730000, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wen, Kai,Sakata, Fumihiko,Li, Zhu-Xia,et al. Non-Gaussian Fluctuations and Non-Markovian Effects in the Nuclear Fusion Process: Langevin Dynamics Emerging from Quantum Molecular Dynamics Simulations[J]. PHYSICAL REVIEW LETTERS,2013,111. |
| APA | Wen, Kai,Sakata, Fumihiko,Li, Zhu-Xia,Wu, Xi-Zhen,Zhang, Ying-Xun,&Zhou, Shan-Gui.(2013).Non-Gaussian Fluctuations and Non-Markovian Effects in the Nuclear Fusion Process: Langevin Dynamics Emerging from Quantum Molecular Dynamics Simulations.PHYSICAL REVIEW LETTERS,111. |
| MLA | Wen, Kai,et al."Non-Gaussian Fluctuations and Non-Markovian Effects in the Nuclear Fusion Process: Langevin Dynamics Emerging from Quantum Molecular Dynamics Simulations".PHYSICAL REVIEW LETTERS 111(2013). |
入库方式： OAI收割
来源：近代物理研究所
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