Single-neutron spectroscopy of ¹²C using the ¹¹C(d,p) reaction at 10 MeV/u.

The single-nucleon energy levels and configurations of ¹²C are predominantly determined by theoretical calculations, with parameters fitted from other measurements. Given that ¹²C is not a simple semi-closed shell nucleus, possesses alpha-cluster states, and is important in various nucleosynthesis pathways, direct measurements of its excited single-particle configuration are crucial for present and future nuclear structure and astrophysics understanding. The first measurement of single-neutron strength in ¹²C for states up to 17 MeV is conducted using the ¹¹C(d,p) reaction with the HELIOS spectrometer at ANL. The experimental setup, analysis, and preliminary results will be presented.