A new system for astrophysical nuclear reaction studies with radioactive ion beams

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Abstract

A beam transport system has been constructed for the production and use of secondary beams of radioactive nuclides for astrophysical nuclear reaction studies. This system is based on six magnetic quadrupole lenses. Beams of 7Be and 13N have been produced in the energy range 15–30 MeV. The cross section of the 2H(7Be, 8B)n reaction is measured to be 58±11 mb at E7Be=16.9 MeV.

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Work performed under the auspices of the U.S. Department of Energy by the Lawrence Livermore National Laboratory under contract number W-7405-ENG-48.

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Present address: Department of Physics, University of Puerto Rico, Mayaguez, Puerto Rico 00708, USA

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Present address: Department of Engineering, Purdue University, Lafayette, IN 47907, USA.

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