Measurement of the longitudinal momentum distribution of S-30 after one-proton removal from Cl-31

The breakup reactions of Cl-31 + C-12 at 44A MeV are investigated experimentally. The longitudinal momentum distribution of S-30 after one-proton removal from Cl-31 has been obtained. By assuming core plus a valence proton structure, the momentum distribution is studied using the few-body Glauber model. The calculation shows that the width of momentum distribution for a valence proton with l = 2 is consistent with the experimental data, which indicates a dominant d-wave component for the valence proton in Cl-31.