Low-energy polarized-proton capture on Li6

C. M. Laymon, R. M. Prior, D. R. Tilley, and H. R. Weller
Phys. Rev. C 53, 1977 – Published 1 April 1996
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Abstract

We have measured the thick-target yield and analyzing power for the Li6(p→,γ) reaction to the ground and first excited state of Be7 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 Li7(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)×105 MeV b has been deduced. © 1996 The American Physical Society.

  • Received 8 December 1995

DOI:https://doi.org/10.1103/PhysRevC.53.1977

©1996 American Physical Society

Authors & Affiliations

C. M. Laymon, R. M. Prior, D. R. Tilley, and H. R. Weller

  • Department of Physics, Duke University, Durham, North Carolina 27708
  • Triangle Universities Nuclear Laboratory, Duke Station, Durham, North Carolina 27708
  • Department of Physics, North Georgia College, Dahlonega, Georgia 30597
  • Department of Physics, North Carolina State University, Raleigh, North Carolina 27695

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Vol. 53, Iss. 4 — April 1996

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