Reaction cross sections in Si of light proton-halo candidates 12N and 17Ne |
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| Institution: | 1. National Superconducting Cyclotron Laboratory, East Lansing, MI 48824, USA;2. Oberlin College, Oberlin, OH 44074, USA;3. University of Michigan, Ann Arbor, MI 48109, USA;4. University of Notre Dame, Notre Dame, IN 46556, USA;5. University of Michigan, Dearborn, MI 48128, USA;6. Saha Institute of Nuclear Physics, 1/AF, Bidhan Nagar, Calcutta-700064, India;7. Indiana University Cyclotron Facility, Bloomington, IN 47405, USA;8. Institute of Nuclear Sciences, VINCA, Belgrade 11001, Yugoslavia |
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| Abstract: | Total reaction cross sections, σR, on Si were measured near 40 A MeV for the proton-halo candidate 12N and the two-proton-halo candidate 17Ne, and were compared with σR for other light proton-rich nuclei. The A-dependence shows enhanced σR's for 12N and 17Ne, relative to their neighbors, but the effect is smaller than for 8B which has been argued to have a proton halo. In general, nuclei with loosely bound last protons (Sp ⩽ 1.5 MeV) have significantly larger σR's than their neighbors. Cross sections for charge-removal from 12N and 17Ne also were obtained. |
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