Published June 14, 1982
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Low-Energy 3He(α, γ)7Be Cross-Section Measurements
Abstract
The cross section and branching ratio for 3He(α, γ)7Be have been measured from Ec.m.=165 to 1170 keV by counting prompt γ rays from a windowless, recirculating, 3He gas target. Absolute cross sections were also measured at Ec.m.=945 and 1250 keV by measuring the 7Be activity produced in a 3He gas cell with a Ni entrance foil. The inferred zero-energy intercept is S34(0)=0.52±0.03 keV b. The effect of this extrapolated value on the solar-neutrino problem is discussed.
Additional Information
©1982 The American Physical Society. Received 22 March 1982. We extend sincere thanks to Martin Weiss, M.D. for his expert repair of an important part of the appratus. This work was supported in part by the National Science Foundation under Grant No. PHY79-23638.Files
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