2007/10/31 by T. A. D. Brown, C. Bordeanu, K. A. Snover +5 · 2 citations
Physics and Astronomy · #Neutrino Physics Research #Nuclear physics research studies #Quantum Chromodynamics and Particle Interactions #astro-ph #nucl-ex
paper · pdf · doi:10.1103/physrevc.76.055801
published as Phys.Rev.C76:055801,2007 · Final version of paper published in Phys. Rev. C (see below). This is a modified version of the paper that was initially posted on October 5, 2007. S-prompt values and uncertainties were corrected for small mistakes. Resulting change in combined zero-energy S-factor was only approx. 1 unit in 600 (less than 10 % of quoted error)
openalex publication_date 2007/11/02 · arxiv created 2007/11/05 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28
We present precision measurements of the 3He+4He \ensuremath→ 7Be reaction in the range Ec.m.=0.33 to 1.23 MeV using a small gas cell and detection of both prompt \ensuremathγ rays and 7Be activity. Our prompt and activity measurements are in good agreement within the experimental uncertainty of several percent. We find S(0)=0.595\ifmmode±\else\textpm\fi0.018 keV b from fits of the Kajino theory to our data. We compare our results with published measurements, and we discuss the consequences for Big Bang Nucleosynthesis and for solar neutrino flux calculations.