| 140AMeV 58,64Ni+9Be反应中同位旋标度规律的研究 |
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| 引用本文： | 乔春源,马春旺,牛菲,许景丽,丁甜甜,宋一丹. 140AMeV 58,64Ni+9Be反应中同位旋标度规律的研究[J]. 原子核物理评论, 2017, 34(3): 525-528. DOI: 10.11804/NuclPhysRev.34.03.525 |
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| 作者姓名： | 乔春源 马春旺 牛菲 许景丽 丁甜甜 宋一丹 |
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| 作者单位： | 1.河南师范大学物理与材料科学学院, 河南 新乡 453007; |
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| 基金项目： | 河南省教育厅高校科技创新人才计划基金资助项目（13HASTIT046） |
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| 摘 要： | 利用反对称化的分子动力学（AMD）模型模拟140 AMeV 58，64Ni+9Be反应，并利用同位旋标度法研究两相似反应系统的△μn（p）/T随时间演化趋势。分析比较不同碰撞参数和不同反应系统间的△μn（p）/T随时间演化结果，结果表明碰撞参数对重核的对称能影响大，系统不对称度越大对对称能的影响越大，为间接研究激发核体系对称能系数的能量依赖提供了帮助。We have simulated the reactions 140 AMeV 58,64Ni+9Be by antisymmetric molecular dynamics model (AMD) and studied the evolution of △μn(p)/T with collision time from 20 fm/c to 1 000 fm/c. To study nuclear symmetry energy influencing factors, a comparative analysis has been proceed among theses results with different impact parameters and the difference reactions system. The results show that the impact parameters have a great influence on the symmetry energy of the heavy nucleus, and the greater the asymmerty degree of the system, the greater the influence on the symmetry energy. These results are helpful for the indirect study of the energy dependence of the symmetry energy coefficient of the excited nuclear system.
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| 关 键 词： | 同位旋标度 对称能 密度 反对称化分子动力学模型 |
| 收稿时间： | 2016-12-06 |
Study of the Nuclear Matter Symmetry Energy in the Simulated 140 AMeV 58,64Ni+9Be Reactions by Isoscaling Method |
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| QIAO Chunyuan,MA Chunwang,NIU Fei,XU Jingli,DING Tiantian,SONG Yidan. Study of the Nuclear Matter Symmetry Energy in the Simulated 140 AMeV 58,64Ni+9Be Reactions by Isoscaling Method[J]. Nuclear Physics Review, 2017, 34(3): 525-528. DOI: 10.11804/NuclPhysRev.34.03.525 |
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| Authors: | QIAO Chunyuan MA Chunwang NIU Fei XU Jingli DING Tiantian SONG Yidan |
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| Affiliation: | 1.College of Physics and Materials Science, Henan Normal University, Xinxiang 453007, Henan, China;2.Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China |
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| Abstract: | We have simulated the reactions 140 AMeV 58,64Ni+9Be by antisymmetric molecular dynamics model (AMD) and studied the evolution of △μn(p)/T with collision time from 20 fm/c to 1 000 fm/c. To study nuclear symmetry energy influencing factors, a comparative analysis has been proceed among theses results with different impact parameters and the difference reactions system. The results show that the impact parameters have a great influence on the symmetry energy of the heavy nucleus, and the greater the asymmerty degree of the system, the greater the influence on the symmetry energy. These results are helpful for the indirect study of the energy dependence of the symmetry energy coefficient of the excited nuclear system. |
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| Keywords: | Isoscaling symmetry energy density antisymmetric molecular dynamics model |
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