The (p→,n) reaction has been measured for ${}_{}{}^{12}{}_{}{}^{}\mathrm{C}$ and ${}_{}{}^{54}{}_{}{}^{}\mathrm{Fe}$ targets at 290 MeV for a lab angle of 20.4° and at 420 MeV for a lab angle of 24.0°. An additional angle of 27.0° was measured for ${}_{}{}^{12}{}_{}{}^{}\mathrm{C}$ at 290 MeV. Both cross sections and analyzing powers were obtained up to excitation energies close to the quasifree peak. The (p→,n) analyzing powers are suppressed relative to the free nucleon-nucleon values for the ${}_{}{}^{12}{}_{}{}^{}\mathrm{C}$ data at 290 and 420 MeV, and for the ${}_{}{}^{54}{}_{}{}^{}\mathrm{Fe}$ data at 290 MeV. An enhanced analyzing power is observed for the ${}_{}{}^{54}{}_{}{}^{}\mathrm{Fe}$ data at 420 MeV. The data are compared with both relativistic and nonrelativistic model calculations.

• Received 28 October 1988

DOI:https://doi.org/10.1103/PhysRevC.40.R2445