Low-energy polarized-proton capture on 6Li

Details Low-energy polarized-proton capture on 6Li Low-energy polarized-proton capture on 6Li

Apr 1996

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996phrvc..53.1977l&link_type=abstract

Physical Review C (Nuclear Physics), Volume 53, Issue 4, April 1996, pp.1977-1980

Physics

Nuclear Physics

4

Radiative Capture, Spectroscopic Factors And Asymptotic Normalization Coefficients, Polarization Phenomena In Reactions, 6<=A<=19

Scientific paper

We have measured the thick-target yield and analyzing power for the 6Li(p-->,γ) reaction to the ground and first excited state of 7Be below Ep=80 keV. High-purity-germanium detectors were used to acquire data at five angles from θ=0° to 124°. For both states the yield, integrated from the beam energy of 80 keV down to 0 keV, is nearly isotropic and the integrated analyzing power shows only small deviations from zero. This is taken as an indication that, unlike the case of the 7Li(p-->,γ0)8Be reaction, the p-wave-capture process is unimportant compared to the s-wave process. Transition-matrix-element analyses of the ground-state data yield p-wave contributions of a few percent. Under the assumption of a constant astrophysical S factor, consistent with direct s-wave capture, a value of S=(2.69+/-0.54)×10-5 MeV b has been deduced.

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