Polarized proton capture by deuterium and the 2H(p,γ)3He astrophysical S factor

Details Polarized proton capture by deuterium and the 2H(p,γ)3He astrophysical S factor Polarized proton capture by deuterium and the 2H(p,γ)3He astrophysical S factor

Oct 1995

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1995phrvc..52.1732s&link_type=abstract

Physical Review C (Nuclear Physics), Volume 52, Issue 4, October 1995, pp.R1732-R1735

Physics

Nuclear Physics

28

Radiative Capture, Polarization Phenomena In Reactions, Elementary Particle Processes

Scientific paper

The 2H(p-->,γ)3He reaction has been studied in the energy region Ep=80-0 keV (Ec.m.=53.3-0 keV), where the quantities measured were σ(θ,E) and Ay(θ,E). Our result for the total 2H(p,γ)3He S factor at E=0 is S(0)=0.121+/-0.012 eV b (including systematic error), which is 52% lower than the presently accepted value. Some astrophysical aspects of this result are discussed. We have also extracted the E1 and M1 S(E) components using our detailed angular distribution data. These data will provide sensitive tests for three-body calculations which include Coulomb and meson exchange current effects.

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