| 超重核合成中的靶核形变效应 |
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| 引用本文： | 刘祖华,包景东. 超重核合成中的靶核形变效应[J]. 原子核物理评论, 2004, 21(4): 370-373. DOI: 10.11804/NuclPhysRev.21.04.370 |
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| 作者姓名： | 刘祖华 包景东 |
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| 作者单位： | 1 兰州重离子加速器国家实验室原子核理论中心; 甘肃兰州7300002 北京师范大学低能核物理研究所 北京1008753 北京师范大学低能核物理研究所 北京1008754中国原子能科学研究院 北京102413; |
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| 基金项目： | 国家自然科学基金资助项目(10235020，10235030)~~ |
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| 摘 要： | 利用额外推力模型研究了48Ca+238U超重核合成过程中的靶核形变效应.计算表明,在近垒和垒下能区,靶核形变使超重核合成截面明显增强.对于48Ca+238U反应,由于靶核形变蒸发残余截面增大了几倍.同时与球形靶核相比,形变靶核时蒸发残余激发函数的峰位移向较低能量.Effects of target deformation on the synthesis of superheavy nucleus~(283)112 are investigated in the framework of extra-push model. Our results show that the cross sections of the 3n evaporation residue in the~(48)Ca+~(238)U reaction for the case of β_2=0.275 are several times larger than those of β_2=0. Meanwhile, the peak position of ER excitation function in the case of deformed target is shifted to the lower energy as compared to the one of spherical target.
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| 关 键 词： | 超重核 额外推力 熔合截面 蒸发残余 |
| 文章编号： | 1007-4627(2004)04-0370-04 |
| 收稿时间： | 1900-01-01 |
| 修稿时间： | 2004-05-21 |
Effects of Target Deformation on Synthesis of Superheavy Nuclei |
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| LIU Zu-Hua. Effects of Target Deformation on Synthesis of Superheavy Nuclei[J]. Nuclear Physics Review, 2004, 21(4): 370-373. DOI: 10.11804/NuclPhysRev.21.04.370 |
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| Authors: | LIU Zu-Hua |
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| Affiliation: | (1 Center of Theoretical Nuclear Physics; National Laboratory of Heavy Ion Accelerator of Lanzhou; Lanzhou 730000; China; 2 cation; Beijing Normal University; Beijing 100875; 3 Department of Physics; 4 China Institute of Atomic Energy; Beijing 102413; China); |
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| Abstract: | Effects of target deformation on the synthesis of superheavy nucleus~(283)112 are investigated in the framework of extra-push model. Our results show that the cross sections of the 3n evaporation residue in the~(48)Ca+~(238)U reaction for the case of β_2=0.275 are several times larger than those of β_2=0. Meanwhile, the peak position of ER excitation function in the case of deformed target is shifted to the lower energy as compared to the one of spherical target. |
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| Keywords: | superheavy nuclei extra-push model fusion cross section evaporation residue |
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