Electromagnetic production of medium-mass Λ-hypernuclei

Excitation spectra of electromagnetic hypernuclear production have been calculated in the DWIA framework for the typical medium-mass targets 28Si, 40Ca, and 52Cr. Available models for the elementary kaon photo-production amplitudes are carefully examined, presenting their basic properties and comparison with data. The selective excitation of unnatural parity highest-spin states (natural parity ones for the LS-closed targets) is clearly demonstrated and provides a unique opportunity to investigate series of Λ single-particle energies in this mass region not yet explored with sub-MeV energy resolution.