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20 April 2024

» arxiv » 0810.3157

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Structure of 55Ti and 49Ca from relativistic one-neutron knockout
P. Maierbeck ; R. Gernhäuser ; R. Krücken ; T. Kröll ; H. Alvarez-Pol ; F. Aksouh ; T. Aumann ; K. Behr ; E.A. Benjamim ; J. Benlliure ; V. Bildstein ; M. Böhmer ; K. Boretzky ; M.J.G. Borge ; A. Brünle ; A. Bürger ; M. Caamaño ; E. Casarejos ; A. Chatillon ; L. V. Chulkov ; D. Cortina-Gil ; J. Enders ; K. Eppinger ; T. Faestermann ; J. Friese ; L. Fabbietti ; M. Gascón ; H. Geissel ; J. Gerl ; M. Gorska ; P.G. Hansen ; B. Jonson ; R. Kanungo ; O. Kiselev ; I. Kojouharov ; A. Klimkiewicz ; T. Kurtukian ; N. Kurz ; K. Larsson ; T. Le Bleis ; K. Mahata ; L. Maier ; T. Nilsson ; C. Nociforo ; G. Nyman ; C. Pascual-Izarra ; A. Perea ; D. Perez ; A. Prochazka ; C. Rodriguez-Tajes ; D. Rossi ; H. Schaffner ; G. Schrieder ; S. Schwertel ; H. Simon ; B. Sitar ; M. Stanoiu ; K. Sümmerer ; O. Tengblad ; H. Weick ;
Date:	17 Oct 2008
Abstract:	Results are presented from a one-neutron knockout reaction at relativistic energies on 50Ca and 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 3.35(15) MeV nu f7/2-hole state in 49Ca and the 955(6) keV nu p3/2-hole state in 55Ti is reported. The measured data clearly indicates 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.
Source:	arXiv, 0810.3157
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