Knowledge Management System of Institute of Theoretical Physics, CAS
Wen, K; Sakata, F; Li, ZX; Wu, XZ; Zhang, YX; Zhou, SG ; Wen, K (reprint author), Chinese Acad Sci, Inst Theoret Phys, State Key Lab Theoret Phys, Beijing 100190, Peoples R China.
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| Non-Gaussian Fluctuations and Non-Markovian Effects in the Nuclear Fusion Process: Langevin Dynamics Emerging from Quantum Molecular Dynamics Simulations | |
| Source Publication | PHYSICAL REVIEW LETTERS
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| Language | 英语 |
| Keyword | Heavy-ion Collisions Superheavy Nuclei Dinuclear System Motion Neck |
| Abstract | 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. |
| 2013 | |
| ISSN | 0031-9007 |
| Volume | 111Issue:1Pages:12501 |
| Subject Area | Physics |
| Indexed By | SCI |
| Funding Organization | Chinese Academy of Sciences (CAS) [2011T1J27]; MOST of China [2013CB834400]; NSF of China [11005155, 11075215, 11121403, 11120101005, 11275052, 11275248]; CAS [KJCX2-EW-N01] ; Chinese Academy of Sciences (CAS) [2011T1J27]; MOST of China [2013CB834400]; NSF of China [11005155, 11075215, 11121403, 11120101005, 11275052, 11275248]; CAS [KJCX2-EW-N01] ; Chinese Academy of Sciences (CAS) [2011T1J27]; MOST of China [2013CB834400]; NSF of China [11005155, 11075215, 11121403, 11120101005, 11275052, 11275248]; CAS [KJCX2-EW-N01] ; Chinese Academy of Sciences (CAS) [2011T1J27]; MOST of China [2013CB834400]; NSF of China [11005155, 11075215, 11121403, 11120101005, 11275052, 11275248]; CAS [KJCX2-EW-N01] |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.itp.ac.cn/handle/311006/15328 |
| Collection | SCI期刊论文 |
| Corresponding Author | Wen, K (reprint author), Chinese Acad Sci, Inst Theoret Phys, State Key Lab Theoret Phys, Beijing 100190, Peoples R China. |
| Recommended Citation GB/T 7714 | Wen, K,Sakata, F,Li, ZX,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(1):12501. |
| APA | Wen, K.,Sakata, F.,Li, ZX.,Wu, XZ.,Zhang, YX.,...&Wen, K .(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(1),12501. |
| MLA | Wen, K,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 111.1(2013):12501. |
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