Measurement of the H-2(Be-7, Li-6)He-3 reaction rate and its contribution to the primordial lithium abundance
文献类型：期刊论文
| 作者 | Sun, Hui-Bin5; Li, Zhi-Hong1; Yan, Sheng-Quan1; Su, Jun1; Guo, Bing1; Li, Yun-Ju1; Wang, You-Bao1; Lian, Gang1; Zeng, Sheng1; Chen, Si-Zhe4 |
| 刊名 | CHINESE PHYSICS C
 |
| 出版日期 | 2018-04-01 |
| 卷号 | 42期号:4页码:044001 |
| 关键词 | reaction rates primordial lithium abundance big bang nucleosynthesis lithium puzzles |
| ISSN号 | 1674-1137 |
| DOI | 10.1088/1674-1137/42/4/044001 |
| 英文摘要 | In the standard Big Bang nucleosynthesis (SBBN) model, the lithium puzzle has attracted intense interest over the past few decades, but still has not been solved. Conventionally, the approach is to include more reactions flowing into or out of lithium, and study the potential effects of those reactions which were not previously considered. Be-7(d, He-3)Li-6 is a reaction that not only produces Li-6 but also destroys Be-7, which decays to Li-7, thereby affecting Li-7 indirectly. Therefore, this reaction could alleviate the lithium discrepancy if its reaction rate is sufficiently high. However, there is not much information available about the Be-7(d, He-3)Li-6 reaction rate. In this work, the angular distributions of the Be-7(d, He-3)Li-6 reaction are measured at the center of mass energies E-cm = 4.0 MeV and 6.7 MeV with secondary Be-7 beams for the first time. The excitation function of the Be-7(d, He-3)Li-6 reaction is first calculated with the computer code TALYS and then normalized to the experimental data, then its reaction rate is deduced. A SBBN network calculation is performed to investigate its influence on the Li-6 and Li-7 abundances. The results show that the Be-7(d, He-3)Li-6 reaction has a minimal effect on Li-6 and Li-7 because of its small reaction rate. Therefore, the (7) Be(d, He-3)Li-6 reaction is ruled out by this experiment as a means of alleviating the lithium discrepancy. |
| WOS关键词 | ANISOTROPY-PROBE OBSERVATIONS ; THERMONUCLEAR REACTION-RATES ; NUCLEAR-REACTION RATES ; METAL-POOR STARS ; HALO-STARS ; DISK-STARS ; DWARFS ; NUCLEOSYNTHESIS ; COMPILATION ; ENERGIES |
| 资助项目 | National Natural Science Foundation of China[11375269] ; National Natural Science Foundation of China[11505117] ; National Natural Science Foundation of China[11490560] ; National Natural Science Foundation of China[11475264] ; National Natural Science Foundation of China[11321064] ; Natural Science Foundation of Guangdong Province[2015A030310012] ; 973 program of China[2013CB834406] ; National key Research and Development Province[2016YFA0400502] |
| WOS研究方向 | Physics |
| 语种 | 英语 |
| WOS记录号 | WOS:000430884300012 |
| 出版者 | IOP PUBLISHING LTD |
| 资助机构 | National Natural Science Foundation of China ; Natural Science Foundation of Guangdong Province ; 973 program of China ; National key Research and Development Province |
| 源URL | [http://119.78.100.186/handle/113462/47663]  |
| 专题 | 近代物理研究所_实验物理中心 |
| 通讯作者 | Li, Er-Tao |
| 作者单位 | 1.China Inst Atom Energy, Beijing 102413, Peoples R China 2.Peking Univ, Sch Phys, Beijing 100871, Peoples R China 3.Peking Univ, State Key Lab Nucl Phys & Technol, Beijing 100871, Peoples R China 4.Chinese Acad Sci, Inst Modern Phys, Lanzhou 730000, Gansu, Peoples R China 5.Shenzhen Univ, Coll Phys & Energy, Shenzhen 518060, Peoples R China |
| 推荐引用方式 GB/T 7714 | Sun, Hui-Bin,Li, Zhi-Hong,Yan, Sheng-Quan,et al. Measurement of the H-2(Be-7, Li-6)He-3 reaction rate and its contribution to the primordial lithium abundance[J]. CHINESE PHYSICS C,2018,42(4):044001. |
| APA | Sun, Hui-Bin.,Li, Zhi-Hong.,Yan, Sheng-Quan.,Su, Jun.,Guo, Bing.,...&Li, Er-Tao.(2018).Measurement of the H-2(Be-7, Li-6)He-3 reaction rate and its contribution to the primordial lithium abundance.CHINESE PHYSICS C,42(4),044001. |
| MLA | Sun, Hui-Bin,et al."Measurement of the H-2(Be-7, Li-6)He-3 reaction rate and its contribution to the primordial lithium abundance".CHINESE PHYSICS C 42.4(2018):044001. |
入库方式： OAI收割
来源：近代物理研究所
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