New determination of the spectroscopic factor of $^7$Be ground state and the $^6$Li($p,\gamma$)$^7$Be astrophysical S(E) factors
| Autor: | Li, Zhi-Hong, Li, Er-Tao, Su, Jun, Li, Yun-Ju, Wang, You-Bao, Yan, Sheng-Quan, Guo, Bing, Nan, Ding, Liu, Wei-Ping |
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| Rok vydání: | 2018 |
| Předmět: | |
| Druh dokumentu: | Working Paper |
| Popis: | The `lithium problem' in Big Bang Nucleosynthesis (BBN) has recently focused on the reactions involving $^7$Be. The $^6$Li($p, \gamma$)$^7$Be reaction can provide us not only the information for destroying $^6$Li but also the information for producing $^7$Be. In the present work, the proton spectroscopic factor in $^7$Be was extracted to be 0.70 $\pm$ 0.17 from the angular distribution of $^7$Be($d$, $^3$He)$^6$Li at $E_\mathrm{c.m.}$ = 6.7 MeV. The value was then used to compute the direct component of the astrophysical $^6$Li($p, \gamma$)$^7$Be$_\mathrm{g.s.}$ S(E) factors and determine the resonance parameters from the total S(E) factors. Comment: 5panges, 2 figures, to be published in Chinese Physics C |
| Databáze: | arXiv |
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