Structure of 55Ti from relativistic one-neutron knockout
Maierbeck, P. and others
Keywords
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Abstract
Results are presented from a one-neutron knockout reaction at relativistic energies on 56Ti using the GSI FRS as a two-stage magnetic spectrometer and the Miniball array for gamma-ray detection. Inclusive and exclusive longitudinal momentum distributions and cross-sections were measured enabling the determination of the orbital angular momentum of the populated states. First-time observation of the 955(6) keV neutron p3/2-hole state in 55Ti is reported. The measured data for the first time proves that the ground state of 55Ti is a 1/2_s13_s178722_s19 state, in agreement with shell-model calculations using the GXPF1A interaction that predict a sizable N = 34 gap in 54Ca.
