A New Precision Measurement of the 3He(4He,gamma)7Be Cross section

Details A New Precision Measurement of the 3He(4He,gamma)7Be Cross section A New Precision Measurement of the 3He(4He,gamma)7Be Cross section

2004-07-16

arxiv.org/abs/nucl-ex/0407017v1

Phys.Rev.Lett.93:262503,2004

Physics

Nuclear Physics

Nuclear Experiment

10 pages 3 figures

Scientific paper

10.1103/PhysRevLett.93.262503

The 3He(4He,gamma)7Be reaction plays an important role in determining the high energy solar neutrino flux and in understanding the abundances of primordial 7Li. The present paper reports a new precision measurement of the cross sections of this direct capture reaction, determined by measuring the ensuing 7Be activity in the region of Ec.m.=400 keV to 950 keV. Various recent theoretical fits to our data result in a consistent extrapolated value of S34(0)=0.53(2)(1).

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