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Shell model analysis of intruder states and high- K isomers in the fp shell

  • ENAM 2004
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Abstract.

We perform a systematic shell-model study of collective intruder structures and fully aligned high-spin states in nuclei from the lower-fp shell in the sdfp configuration space. We analyze the intruder structures associated with the 1p-1h cross-shell excitations from the sd shell that have been observed in several nuclei from this region, including 44Ti and 44Sc. We compare the shell-model calculations to the recent mean-field work (H. Zduńczuk, W. Satuła, R.A. Wyss, nucl-th/0408018) and experimental data (M. Lach, J. Styczeń, private communication). The high-spin behavior may be understood in terms of the competing cross-shell proton and neutron excitations. The interplay between proton and neutron intruder states is reflected in the angular-momentum dependence of electromagnetic rates.

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Authors and Affiliations

  1. Physics Division, Oak Ridge National Laboratory, 37831, Oak Ridge, TN, USA

    G. Stoitcheva, W. Nazarewicz & D. J. Dean

  2. Department of Physics, University of Tennessee, 37996, Knoxville, TN, USA

    G. Stoitcheva & W. Nazarewicz

  3. Institute of Theoretical Physics, Warsaw University, ul. Hoża 69, 00-681, Warsaw, Poland

    W. Nazarewicz

Authors
  1. G. Stoitcheva
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  2. W. Nazarewicz
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  3. D. J. Dean
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Correspondence to G. Stoitcheva.

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Stoitcheva, G., Nazarewicz, W. & Dean, D.J. Shell model analysis of intruder states and high- K isomers in the fp shell. Eur. Phys. J. A 25 (Suppl 1), 509–510 (2005). https://doi.org/10.1140/epjad/i2005-06-207-9

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  • DOI: https://doi.org/10.1140/epjad/i2005-06-207-9

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