Single-neutron-transfer measurements using ($p$,$d$) reactions have been performed at 33 MeV per nucleon with proton-rich ${}^{34}\mathrm{Ar}$ and neutron-rich ${}^{46}\mathrm{Ar}$ beams in inverse kinematics. The extracted spectroscopic factors are compared to the large-basis shell-model calculations. Relatively weak quenching of the spectroscopic factors is observed between ${}^{34}\mathrm{Ar}$ and ${}^{46}\mathrm{Ar}$. The experimental results suggest that neutron correlations have a weak dependence on the asymmetry of the nucleus over this isotopic region. The present results are consistent with the systematics established from extensive studies of spectroscopic factors and dispersive optical-model analyses of ${}^{40-49}\mathrm{Ca}$ isotopes. They are, however, inconsistent with the trends obtained in knockout-reaction measurements.

• Received 8 September 2010

DOI:https://doi.org/10.1103/PhysRevC.83.014606