Proton spin flip at 12 MeV for nuclei near the neutron shell closure, N = 28

Spin-flip angular distributions for the nuclear pairs ^{48, 50}Ti and ^{54, 56}Fe have been measured using the (p, p'γ) correlation method. These data are compared to collective model DWBA calculations using a distorted spin-orbit potential of the full Thomas form. The spinflip angular distribution data for ⁵⁴Fe exhibit two peaks of nearly equal magnitude while the data for ⁵⁶Fe and ^{48, 50}Ti more closely resemble the usual single large peak at back angles predicted by DWBA calculations.