Open AccessUnderground Measurement of 6Li(p,γ)7Be and 6Li(p,3He)4He Performed at LUNA
Author(s) -
T. Chillery
Publication year - 2020
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1643/1/012046
Subject(s) - nucleosynthesis , physics , isotopes of lithium , lithium (medication) , nuclear reaction , stars , proton , big bang nucleosynthesis , nuclear physics , natural abundance , nuclear astrophysics , deuterium , radiochemistry , analytical chemistry (journal) , atomic physics , astrophysics , chemistry , isotope , ion , ion exchange , medicine , chromatography , quantum mechanics , endocrinology
Proton-induced reactions on 6 Li play an important role in nuclear astrophysics studies in relation to primordial lithium abundances. Whilst big bang nucleosynthesis theory excludes the existence of primordial 6 Li, the 6 Li/ 7 Li abundance ratio observed in pre-main sequence stars is ≃ 0.5. The 6 Li(p, 3 He) 4 He and 6 Li(p,γ) 7 Be reactions are the main processes that contribute to 6 Li destruction in stars. Both reactions were recently studied at LUNA via proton bombardment of 6 Li-enriched targets, with complementary target composition studies performed at HZDR. Improvements on the precision of the low-energy S-factor values are expected from this study. Notably, the low-background measurement at LUNA will assist the search for a recently claimed 6 Li(p,γ) 7 Be low energy resonance at E r ≃ 195 keV. I present the LUNA experimental setup and preliminary results of the ongoing analysis.