Abstract
The cosmological 7Li problem has been one of the big issues left in the standard Big-Bang nucleosynthesis (BBN) model. In order to determine the radiogenic 7Li abundance by the BBN, it is important to know the production and the destruction rate of 7Be rather than 7Li itself. We performed indirect measurements of the relevant neutron-induced reactions 7Be(n, p)7Li and 7Be(n, α)4He simultaneously by the Trojan Horse Method (THM) via the three-body reactions 7Be(d,7Lip)1H and 7Be(d, αα)1H. A 7Be radioactive-isotope (RI) beam at 3.16 MeV/u was produced at Center-for-Nuclear-Study RI Beam (CRIB) separator. The Q-value spectra shows the evidence of the three-body channels of interest. We confirmed that the THM was applicable to the present measurements by the momentum distributions of the spectator proton. Preliminary excitation functions are roughly consistent with the previous studies, moreover providing new data in the BBN energy range, and suggesting that new information about the 7Be(n, p1)7Li∗ contribution may be obtained by carrying out a further data analysis.
Original language | English |
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Title of host publication | 14th International Symposium on Origin of Matter and Evolution of Galaxies, OMEG2017 |
Editors | Kevin Insik Hahn, Young Sun Lee, Sunchan Jeong, Sang Chul Kim, Myung-Ki Cheoun, Kyujin Kwak, Sung-Chul Yoon |
Publisher | American Institute of Physics Inc. |
ISBN (Electronic) | 9780735416420 |
DOIs | |
Publication status | Published - 2018 Apr 25 |
Event | 14th International Symposium on Origin of Matter and Evolution of Galaxies, OMEG2017 - Daejeon, Korea, Republic of Duration: 2017 Jun 27 → 2017 Jun 30 |
Publication series
Name | AIP Conference Proceedings |
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Volume | 1947 |
ISSN (Print) | 0094-243X |
ISSN (Electronic) | 1551-7616 |
Other
Other | 14th International Symposium on Origin of Matter and Evolution of Galaxies, OMEG2017 |
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Country/Territory | Korea, Republic of |
City | Daejeon |
Period | 17/6/27 → 17/6/30 |
ASJC Scopus subject areas
- Physics and Astronomy(all)