Low energy measurement of the 7Be(p,gamma)8B cross section

Details Low energy measurement of the 7Be(p,gamma)8B cross section Low energy measurement of the 7Be(p,gamma)8B cross section

2001-01-31

arxiv.org/abs/nucl-ex/0101014v1

Phys.Rev.Lett.86:3985-3988,2001

Physics

Nuclear Physics

Nuclear Experiment

Accepted for publication in Phys. Rev. Lett

Scientific paper

10.1103/PhysRevLett.86.3985

We have measured the cross section of the 7Be(p,gamma)8B reaction for E_cm = 185.8 keV, 134.7 keV and 111.7 keV using a radioactive 7Be target (132 mCi). Single and coincidence spectra of beta^+ and alpha particles from 8B and 8Be^* decay, respectively, were measured using a large acceptance spectrometer. The zero energy S factor inferred from these data is 18.5 +/- 2.4 eV b and a weighted mean value of 18.8 +/- 1.7 eV b (theoretical uncertainty included) is deduced when combining this value with our previous results at higher energies.

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