Halo structure of C-19 via the (p,d) reaction

We have investigated the heaviest one-neutron halo candidate, the C-19 nucl eus. Few-body model calculations of cross-section angular distributions for the C-19(p, d)C-18 reaction together with test calculations carried out fo r the C-17(p, d)C-16 reaction at a low incident energy are presented for di fferent possible halo-neutron configurations. We show that there is a clear distinction in particular between l(n) = 0 and l(n) = 2 halo transfers. Th e sensitivity of the cross sections to the assumed C-19 single-neutron sepa ration energy is discussed.