The breakup reactions of ${}^{31}\text{Cl}+{}^{12}\text{C}$ at 44$A$ MeV are investigated experimentally. The longitudinal momentum distribution of ${}^{30}$S after one-proton removal from ${}^{31}$Cl 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 ${}^{31}$Cl.

• Received 13 June 2011

DOI:https://doi.org/10.1103/PhysRevC.84.037603