Abstract
The45Sc(α, p γ) reaction has been investigated atE α=11, 12 and 13MeV. Theγ-decay of 198 levels in48Ti up to 8,323 keV excitation energy has been observed. High-spin states were investigated by proton-γ ray angular correlation measurements atE=11 and 13MeV and by DSAM lifetime measurements atE=11 MeV. From the combined evidence spin (-parity) assignments were obtained for the levels atE x =8,323 keV (J= 10,8,6), 8,091(12, 10, 8, 6), 7,668(10, 8), 7,427(9, 7), 7,374(11, 9, 7), 6,906(10, 8, 6), 6,172(8+,6+), 6,102(10+,8+), 6,039(6), 6,034(9+, 7+), 5,630(7), 5,197(8+), 5,169(7+), 5,155(5), 4,404(5), 4,398(6+) and 4,046keV (5). Most of the ambiguous spin assignments become unique if the 8,091 keV level hasJ=12, an assumption which is favoured by its excitation function. The level spectrum thus obtained is well reproduced by shell model calculations in the pure (f 7/2)8 configuration space. Discrepancies exist in the reproduction ofγ-decay modes. The reason is found in low-lying high-spin intruder states which include the 7,427 and 8,323 keV levels. The spectrum of negative-parity states is understood qualitatively by a comparison with46Ti and42Ca.
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Work supported by Deutsche Forschungsgemeinschaft
The authors are indebted to W. Kutschera and B.A. Brown for providing us with their shell model calculations prior to publication and for calculating additional transition rates. The help of Miss V. Gallo who carefully typed the lengthy manuscript, of Miss G. Born who prepared targets, and of the staff of the accelerator is gratefully acknowledged. The data reduction was performed in part at “Rechenzentrum der Universität Freiburg”.
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Glatz, F., Betz, P., Bitterwolf, E. et al. High-spin states in48Ti. Z Physik A 293, 57–73 (1979). https://doi.org/10.1007/BF01414785
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DOI: https://doi.org/10.1007/BF01414785