| Heavy ion reactions around the coulomb barrier | |
| Zhang HuanQiao1; Lin ChengJian1; Jia HuiMing1; Zhang ChunLei1,2; Zhang GaoLong1,3; Yang Feng1; Liu ZuHua1; An GuangPeng1; Wu ZhenDong1; Xu XinXing1 | |
| 刊名 | Science china-physics mechanics & astronomy
 |
| 2011-08-01 | |
| 卷号 | 54页码:S6-s13 |
| 关键词 | Fusion-fission Quasi-fission Fusion hindrance Fusion enhancement Surface diffuseness parameter Exotic nuclei |
| ISSN号 | 1674-7348 |
| DOI | 10.1007/s11433-011-4419-5 |
| 通讯作者 | Zhang huanqiao(huan@ciae.ac.cn) |
| 英文摘要 | The angular distributions of fission fragments for the s-32+w-184 reaction near coulomb barrier energies are measured. the experimental fission excitation function is obtained. the measured fission cross sections are decomposed into fusion-fission, quasi-fission and fast fission contributions by the dinuclear system (dns) model. the hindrance to completing fusion both at small and large collision energies is explained. the fusion excitation functions of s-32+zr-90,zr-96 in an energy range from above to below the coulomb barrier are measured and analyzed within a semi-classical model. the obvious effect of positive q-value multi-neutron transfers on the sub-barrier fusion enhancement is observed in the s-32+zr-96 system. in addition, the excitation functions of quasi-elastic scattering at a backward angle have been measured with high precision for the systems of o-16+pb-208, pt-196, w-184, and sm-154,sm-152 at energies well below the coulomb barrier. considering the deformed coupling effects, the extracted diffuseness parameters are close to the values extracted from the systematic analysis of elastic and inelastic scattering data. the elastic scattering angular distribution of f-17+c-12 at 60 mev is measured and calculated by using the continuum-discretized coupled-channels (cdcc) approach. it is found that the diffuseness parameter of the real part of core-target potential has to be increased by 20% to reproduce the experimental result, which corresponds to an increment of potential depth at the surface region. the breakup cross section and the coupling between breakup and elastic scattering are small. |
| WOS关键词 | FUSION CROSS-SECTIONS ; CHANNELS CALCULATIONS ; SUPERHEAVY ELEMENTS ; SUBBARRIER FUSION ; FISSION ; ENHANCEMENT ; NUCLEUS ; SYSTEMATICS ; ENERGIES |
| WOS研究方向 | Physics |
| WOS类目 | Physics, Multidisciplinary |
| 语种 | 英语 |
| 出版者 | SCIENCE PRESS |
| WOS记录号 | WOS:000302529300002 |
| 内容类型 | 期刊论文 |
| URI标识 | http://www.corc.org.cn/handle/1471x/2176206 |
| 专题 | 高能物理研究所 |
| 通讯作者 | Zhang HuanQiao |
| 作者单位 | 1.China Inst Atom Energy, Beijing 102413, Peoples R China 2.Chinese Acad Sci, Inst High Energy Phys, Ctr Particle Astrophys, Beijing 100039, Peoples R China 3.Beihang Univ, Sch Phys & Nucl Energy Engn, Beijing 100191, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhang HuanQiao,Lin ChengJian,Jia HuiMing,et al. Heavy ion reactions around the coulomb barrier[J]. Science china-physics mechanics & astronomy,2011,54:S6-s13. |
| APA | Zhang HuanQiao.,Lin ChengJian.,Jia HuiMing.,Zhang ChunLei.,Zhang GaoLong.,...&Jia Fei.(2011).Heavy ion reactions around the coulomb barrier.Science china-physics mechanics & astronomy,54,S6-s13. |
| MLA | Zhang HuanQiao,et al."Heavy ion reactions around the coulomb barrier".Science china-physics mechanics & astronomy 54(2011):S6-s13. |
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