The $\gamma$ decay of the $2p_{\frac{3}{2}}$ analog state in ${}_{}{}^{53}{}_{}{}^{}\mathrm{Mn}$, ${}_{}{}^{55}{}_{}{}^{}\mathrm{Co}$, and ${}_{}{}^{59}{}_{}{}^{}\mathrm{Cu}$ has been studied at 18 MeV by means of the (${}_{}{}^3{}_{}{}^{}\mathrm{He},d\gamma$) reaction. The $\gamma$ rays in coincidence with deuterons emitted near 0° were detected by two Ge(Li) detectors located at $\theta =90\mathrm{}° \mathrm{and} 147°$. Decay schemes, energies, and spins have been established. The $2p_{\frac{3}{2}}$ analog state in ${}_{}{}^{53}{}_{}{}^{}\mathrm{Mn}$ is located at $E_x=6971\mathrm{}$ keV. We confirm that the $2p_{\frac{3}{2}}$ analog state is split in ${}_{}{}^{55}{}_{}{}^{}\mathrm{Co}$ ($E_x=4722\mathrm{} \mathrm{and} 4747$ keV) and in ${}_{}{}^{59}{}_{}{}^{}\mathrm{Cu}$ ($E_x=3885\mathrm{} \mathrm{and} 3904$ keV) implying a strong Coulomb mixing with a nearby $T_{<}$ level. We do not see the large reduction of the $M1\mathrm{}$ analog-antianalog transition previously observed in other nuclei in the $f-p$ shell region. Calculations have been completed in a schematic model. Other levels and particularly $1f_{\frac{5}{2}}$ and $2p_{\frac{1}{2}}$ analog states in the same nuclei are also observed and discussed.

NUCLEAR REACTIONS ${}_{}{}^{52}{}_{}{}^{}\mathrm{Cr}$, ${}_{}{}^{54}{}_{}{}^{}\mathrm{Fe}$, ${}_{}{}^{58}{}_{}{}^{}\mathrm{Ni}({}_{}{}^3{}_{}{}^{}\mathrm{He},d\gamma )$, $E=18\mathrm{}$ MeV; $\gamma$-decay schemes and splitting of the $2p_{\frac{3}{2}}$ analog state in ${}_{}{}^{53}{}_{}{}^{}\mathrm{Mn}$, ${}_{}{}^{55}{}_{}{}^{}\mathrm{Co}$, and ${}_{}{}^{59}{}_{}{}^{}\mathrm{Cu}$; Ge(Li) detectors; natural and enriched targets.

• Received 30 November 1977

DOI:https://doi.org/10.1103/PhysRevC.17.1588