Observation ofT=1andT=0Gamow-Teller States in the ReactionFe54(p,n)Co54

The reaction ${}_{}{}^{54}{}_{}{}^{}\mathrm{Fe}$($p$,$n$)${}_{}{}^{54}{}_{}{}^{}\mathrm{Co}$ has been studied at $E_p=32, 35, \mathrm{and} 40$ MeV. Two prominent peaks observed at $E_x=5.32\mathrm{} \mathrm{and} 10.23$ MeV are assigned as $1^{+}$ from the energy dependence of cross sections and the angular distribution measurements, and interpreted as the $T=0\mathrm{}$ and $T=1\mathrm{}$ components of the Gamow-Teller giant resonance. They carry 40-50% of the expected strengths. The energies and strengths of these peaks agree with a recent shell-model calculation.