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 ν p3 / 2- 1-hole state in 55Ti is reported. The measured data for the first time proves that the ground state of 55Ti is a 1 / 2- state, in agreement with shell-model calculations using the GXPF1A interaction that predict a sizable N = 34 gap in 54Ca.
Original language | English |
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Pages (from-to) | 22-27 |
Number of pages | 6 |
Journal | Physics Letters B |
Volume | 675 |
Issue number | 1 |
DOIs | |
State | Published - 4 May 2009 |
Keywords
- Nuclear structure
- One-neutron knockout