New Thermonuclear Rate of Li-7(d,n)2(4)He Relevant to the Cosmological Lithium Problem
文献类型：期刊论文
| 作者 | Hou, S. Q.2,3; Kajino, T.1,4,5,6; Trueman, T. C. L.7,8; Pignatari, M.7,8,9; Luo, Y. D.1,4; Bertulani, C. A.10 |
| 刊名 | ASTROPHYSICAL JOURNAL
 |
| 出版日期 | 2021-10-01 |
| 卷号 | 920期号:2页码:10 |
| ISSN号 | 0004-637X |
| DOI | 10.3847/1538-4357/ac1a11 |
| 通讯作者 | Kajino, T.(kajino@buaa.edu.cn) |
| 英文摘要 | Accurate Li-7(d,n)2(4)He thermonuclear reaction rates are crucial for precise prediction of the primordial abundances of lithium and beryllium and to probe the mysteries beyond fundamental physics and the standard cosmological model. However, uncertainties still exist in current reaction rates of Li-7(d,n)2(4)He widely used in big bang nucleosynthesis (BBN) simulations. In this work, we reevaluate the Li-7(d,n)2(4)He reaction rate using the latest data on the three near-threshold Be-9 excited states from experimental measurements. We present for the first time uncertainties that are directly constrained by experiments. Additionally, we take into account for the first time the contribution from the subthreshold resonance at 16.671 MeV of Be-9. We obtain a Li-7(d,n)2(4)He rate that is overall smaller than the previous estimation by about a factor of 60 at the typical temperature of the onset of primordial nucleosynthesis. We implemented our new rate in BBN calculations, and we show that the new rates have a very limited impact on the final light element abundances in uniform density models. Typical abundance variations are in the order of 0.002%. For nonuniform density BBN models, the predicted Li-7 production can be increased by 10% and the primordial production of light nuclides with mass number A > 7 can be increased by about 40%. Our results confirm that the cosmological lithium problem remains a long-standing unresolved puzzle from the standpoint of nuclear physics. |
| WOS关键词 | BIG-BANG NUCLEOSYNTHESIS ; WIDE ENERGY-RANGE ; CROSS-SECTION ; PRIMORDIAL NUCLEOSYNTHESIS ; BARYON DENSITY ; N-TOF ; LIGHT ; ELEMENTS ; ABUNDANCES ; BE-7 |
| 资助项目 | Strategic Priority Research Program of Chinese Academy of Sciences[XDB34020204] ; Youth Innovation Promotion Association of Chinese Academy of Sciences[2019406] ; National Natural Science Foundation of China[11705244] ; National Natural Science Foundation of China[11490562] ; National Natural Science Foundation of China[11961141004] ; National Science Foundation[OISE-1927130] ; Japan Society for the Promotion of Science[20K03958] ; Japan Society for the Promotion of Science[17K05459] ; NuGrid from STFC (University of Hull's Consolidated Grant)[ST/R000840/1] ; Lendulet-2014 Program of the Hungarian Academy of Sciences (Hungary) ; ERC Consolidator Grant (Hungary) funding scheme (Project RADIOSTAR)[724560] ; National Science Foundation (NSF, USA)[PHY-1430152] ; COST (European Cooperation in Science and Technology)[CA16117] ; European Union[101008324] ; U.S. DOE[DE-FG02-08ER41533] ; LANL Collaborative Research Program by the Texas A&M System National Laboratory Office ; JSPS KAKENHI[19J22167] |
| WOS研究方向 | Astronomy & Astrophysics |
| 语种 | 英语 |
| 出版者 | IOP Publishing Ltd |
| WOS记录号 | WOS:000710697800001 |
| 资助机构 | Strategic Priority Research Program of Chinese Academy of Sciences ; Youth Innovation Promotion Association of Chinese Academy of Sciences ; National Natural Science Foundation of China ; National Science Foundation ; Japan Society for the Promotion of Science ; NuGrid from STFC (University of Hull's Consolidated Grant) ; Lendulet-2014 Program of the Hungarian Academy of Sciences (Hungary) ; ERC Consolidator Grant (Hungary) funding scheme (Project RADIOSTAR) ; National Science Foundation (NSF, USA) ; COST (European Cooperation in Science and Technology) ; European Union ; U.S. DOE ; LANL Collaborative Research Program by the Texas A&M System National Laboratory Office ; JSPS KAKENHI |
| 源URL | [http://119.78.100.186/handle/113462/136070]  |
| 专题 | 中国科学院近代物理研究所 |
| 通讯作者 | Kajino, T. |
| 作者单位 | 1.Univ Tokyo, Grad Sch Sci, Bunkyo Ku, 7-3-1 Hongo, Tokyo 1130033, Japan 2.Chinese Acad Sci, Inst Modern Phys, Key Lab High Precis Nucl Spect, Lanzhou 730000, Peoples R China 3.Univ Chinese Acad Sci, Sch Nucl Sci & Technol, Beijing 100049, Peoples R China 4.Natl Astron Observ Japan, 2-21-1 Osawa, Mitaka, Tokyo 1818588, Japan 5.Beihang Univ, Sch Phys, 37 Xueyuan Rd, Beijing 100083, Peoples R China 6.Beihang Univ, Int Res Ctr Big Bang Cosmol & Element Genesis, 37 Xueyuan Rd, Beijing 100083, Peoples R China 7.Univ Hull, EA Milne Ctr Astrophys, Dept Phys & Math, Kingston Upon Hull HU6 7RX, Yorks, England 8.Hungarian Acad Sci, Res Ctr Astron & Earth Sci, Konkoly Observ, H-1121 Budapest, Hungary 9.Michigan State Univ, Ctr Evolut Elements, Joint Inst Nucl Astrophys, E Lansing, MI 48824 USA 10.Texas A&M Univ Commerce, Dept Phys & Astrom, Commerce, TX 75429 USA |
| 推荐引用方式 GB/T 7714 | Hou, S. Q.,Kajino, T.,Trueman, T. C. L.,et al. New Thermonuclear Rate of Li-7(d,n)2(4)He Relevant to the Cosmological Lithium Problem[J]. ASTROPHYSICAL JOURNAL,2021,920(2):10. |
| APA | Hou, S. Q.,Kajino, T.,Trueman, T. C. L.,Pignatari, M.,Luo, Y. D.,&Bertulani, C. A..(2021).New Thermonuclear Rate of Li-7(d,n)2(4)He Relevant to the Cosmological Lithium Problem.ASTROPHYSICAL JOURNAL,920(2),10. |
| MLA | Hou, S. Q.,et al."New Thermonuclear Rate of Li-7(d,n)2(4)He Relevant to the Cosmological Lithium Problem".ASTROPHYSICAL JOURNAL 920.2(2021):10. |
入库方式： OAI收割
来源：近代物理研究所
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