Abstract

One-neutron removal cross-sections ( \(\)) of 17, 19C in various targets at about 900 MeV/nucleon, and one-proton removal cross-sections ( \(\)) of 8, 10B at about 1400 MeV/nucleon were measured using the fragment separator FRS at GSI. A significant increase of \(\) for 19C compared to its neighbors was observed. The same behavior was found for \(\) for the neutron-deficient nucleus 8B compared to the stable isotope 10B. These results support a one-neutron halo structure in 19C and a one-proton halo in 8B.

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