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Structure of Ti-55 from relativistic one-neutron knockout

AuthorsMaierbeck, P.; Gernhäuser, R.; Krücken, R.; Kröll, T.; Álvarez-Pol, H.; Aksouh, F.; Aumann, T.; Behr, K.; Benjamim, E. A.; Benlliure, J.; Bildstein, V.; Böhmer, M.; Boretzky, K.; García Borge, María José CSIC ORCID; Brünle, A.; Bürger, A.; Caamaño, M.; Casarejos, E.; Chatillon, A.; Chulkov, L. V.; Cortina-Gil, D.; Enders, J.; Eppinger, K.; Faestermann, T.; Friese, J.; Fabbietti, L.; Gascón, M.; Geissel, H.; Gerl, J.; Gorska, M.; Hansen, P. G.; Jonson, B.; Kanungo, R.; Kiselev, O.; Kojouharov, I.; Klimkiewicz, A.; Kurtukian, T.; Kurz, N.; Larsson, K.; Le Bleis, T.; Mahata, K.; Maier, L.; Nilsson, T.; Nociforo, C.; Nyman, G.; Pascual-Izarra, C. CSIC ORCID; Perea, Ángel CSIC ORCID; Pérez, D.; Prochazka, A.; Rodríguez-Tajes, C.; Rossi, D.; Schaffner, H.; Schrieder, G.; Schwertel, S.; Simon, H.; Sitar, B.; Stanoiu, M.; Sümmerer, K.; Tengblad, Olof CSIC ORCID ; Weick, H.; Winkler, S.; Brown, B.A. ; Otsuka, T.; Tostevin, J.; Rae, W. D. M.
KeywordsOne-neutron knockout
Nuclear structure
[PACS] Shell model
[PACS] γ transitions and level energies
[PACS] Direct reactions
[PACS] Breakup and momentum distributions
[PACS] Properties of specific nuclei listed by mass ranges: 39 ≤ A ≤ 58
Issue Date31-Mar-2009
CitationPhysics Letters B 675(1): 22–27 (2009)
AbstractResults are presented from a one-neutron knockout reaction at relativistic energies on Ti-56 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 vp(3/2)(-1)-hole state in Ti-55 is reported. The measured data for the first time proves that the ground state of Ti-55 is a 1/2(−) state, in agreement with shell-model calculations using the GXPF1A interaction that predict a sizable N=34 gap in Ca-54.
Description6 pages, 4 figures.-- PACS nrs.: 21.60.Cs; 23.20.Lv; 24.50.+g; 25.60.Gc; 27.40.+z.-- Printed version published May 4, 2009.-- ArXiv pre-print available at:
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