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Tian Jun-Long; Wu Xi-Zhen; Li Zhu-Xia; Zhao Kai; Tian, JL , China Inst Atom Energy, Beijing 102413, Peoples R China
Superheavy fragments produced in the asymmetric strongly damped collision
发表期刊CHINESE PHYSICS C
关键词Dinuclear System U-238 Elements Nuclei State
摘要The strongly damped collisions of very heavy nuclei Th-232+Cf-250 at the energy range of 680-1880 MeV have been studied within the improved quantum molecular dynamics model. The production probability of primary superheavy fragments with Z >= 114 (SHFs) for the asymmetric reaction Th-232+Cf-250 is higher than that for the symmetric reaction Pu-244+Pu-244 and U-238+U-238. The calculated results show that the mass and charge distributions of primary fragments, the excitation energy distribution of SHFs depend on the incident energies strongly. Two stages of the decay process of composite systems are distinguished by very different decay slopes, which imply different decay mechanisms of the composite system. The first stage is for the decay of giant composite systems and the second one corresponds to the decay of fragments of giant composite systems including SHFs through emitting neutron, proton or other charged particles, and also through fission or fragmentation. The slow reduction of SHFs in the second stage seems to be helpful for the survival of primary superheavy fragments.
2008
ISSN1674-1137
卷号32期号:1页码:34-39
学科领域Physics
收录类别SCI
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被引频次:2[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.itp.ac.cn/handle/311006/5607
专题理论物理所科研产出_SCI论文
通讯作者Tian, JL , China Inst Atom Energy, Beijing 102413, Peoples R China
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GB/T 7714
Tian Jun-Long,Wu Xi-Zhen,Li Zhu-Xia,et al. Superheavy fragments produced in the asymmetric strongly damped collision[J]. CHINESE PHYSICS C,2008,32(1):34-39.
APA Tian Jun-Long,Wu Xi-Zhen,Li Zhu-Xia,Zhao Kai,&Tian, JL , China Inst Atom Energy, Beijing 102413, Peoples R China.(2008).Superheavy fragments produced in the asymmetric strongly damped collision.CHINESE PHYSICS C,32(1),34-39.
MLA Tian Jun-Long,et al."Superheavy fragments produced in the asymmetric strongly damped collision".CHINESE PHYSICS C 32.1(2008):34-39.
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