Measurements of the neutron-induced reactions on 7Be with CRIB by the Trojan Horse method

S. Hayakawa, K. Abe, O. Beliuskina, S. M. Cha, K. Y. Chae, S. Cherubini, P. Figuera, Z. Ge, M. Gulino, J. Hu, A. Inoue, N. Iwasa, D. Kahl, A. Kim, D. H. Kim, G. Kiss, S. Kubono, M. La Cognata, M. La Commara, L. LamiaM. Lattuada, E. J. Lee, J. Y. Moon, S. Palmerini, C. Parascandolo, S. Y. Park, D. Pierroutsakou, R. G. Pizzone, G. G. Rapisarda, S. Romano, H. Shimizu, C. Spitaleri, X. D. Tang, O. Trippella, A. Tumino, P. Vi, H. Yamaguchi, L. Yang, N. T. Zhang

Research output: Chapter in Book/Report/Conference proceedingConference contribution

5 Citations (Scopus)

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 languageEnglish
Title of host publication14th International Symposium on Origin of Matter and Evolution of Galaxies, OMEG2017
EditorsKevin Insik Hahn, Young Sun Lee, Sunchan Jeong, Sang Chul Kim, Myung-Ki Cheoun, Kyujin Kwak, Sung-Chul Yoon
PublisherAmerican Institute of Physics Inc.
ISBN (Electronic)9780735416420
DOIs
Publication statusPublished - 2018 Apr 25
Event14th International Symposium on Origin of Matter and Evolution of Galaxies, OMEG2017 - Daejeon, Korea, Republic of
Duration: 2017 Jun 272017 Jun 30

Publication series

NameAIP Conference Proceedings
Volume1947
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616

Other

Other14th International Symposium on Origin of Matter and Evolution of Galaxies, OMEG2017
CountryKorea, Republic of
CityDaejeon
Period17/6/2717/6/30

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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    Hayakawa, S., Abe, K., Beliuskina, O., Cha, S. M., Chae, K. Y., Cherubini, S., Figuera, P., Ge, Z., Gulino, M., Hu, J., Inoue, A., Iwasa, N., Kahl, D., Kim, A., Kim, D. H., Kiss, G., Kubono, S., La Cognata, M., La Commara, M., ... Zhang, N. T. (2018). Measurements of the neutron-induced reactions on 7Be with CRIB by the Trojan Horse method. In K. I. Hahn, Y. S. Lee, S. Jeong, S. C. Kim, M-K. Cheoun, K. Kwak, & S-C. Yoon (Eds.), 14th International Symposium on Origin of Matter and Evolution of Galaxies, OMEG2017 [020011] (AIP Conference Proceedings; Vol. 1947). American Institute of Physics Inc.. https://doi.org/10.1063/1.5030815