Neutron halo in 14B studied via reaction cross sections
1 Department of Physics, Osaka University, Toyonaka, Osaka 560-0043, Japan
2 Department of Physics, Tokyo University of Science, Noda 278-8510, Japan
3 Department of Physics, Niigata University, Niigata 950-2102, Japan
4 Gesellschaft für Schwerionenforschung GSI, 64291 Darmstadt, Germany
5 RI center, Niigata University, Niigata 951-8510, Japan
6 Department of Physics, Saitama University, Saitama 338-3570, Japan
7 National Institute of Radiological Sciences, Chiba 263-8555, Japan
a e-mail: email@example.com
Published online: 20 March 2014
Reaction cross sections (σR) for the neutron-rich nucleus 14B on Be, C, and Al targets have been measured at several energies in the intermediate energy range of 45–120 MeV/nucleon. The present experimental σR show a significant enhancement relative to the systematics of stable nuclei. The nucleon density distribution was deduced through the fitting procedure with the modified Glauber calculation. The necessity of a long tail in the density distribution was found, which is consistent with the valence neutron in 2s1/2 orbital with the small empirical one-neutron separation energy in 14B.
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