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Do we understand the electric quadrupole strength distributions in magic nuclei?

  • Regular Article - Nuclear Structure and Reactions
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Abstract.

A comparison between the electric quadrupole (E2) strength distributions in 40, 48Ca with new results from 52Cr is presented. The deduced E2 strength distributions and the exhaustion of the isoscalar energy-weighted E2 sum rule are very different. Microscopic approaches fail to reproduce these differences. A survey of the available data shows that the exhaustion of the energy-weighted isoscalar E2 sum rule in doubly magic nuclei below the isoscalar giant quadrupole resonance is typically more than two times larger than in semi-magic nuclei. On the other hand, the E2 strength in this energy region exhausts about 50% of the total E2 strength, independent from shell closures.

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  1. Institut für Kernphysik, Technische Universität Darmstadt, Schlossgartenstraße 9, D-64289, Darmstadt, Germany

    J. Enders, O. Karg, P. von Neumann-Cosel & V. Yu. Ponomarev

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  1. J. Enders
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  2. O. Karg
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Enders, J., Karg, O., von Neumann-Cosel, P. et al. Do we understand the electric quadrupole strength distributions in magic nuclei?. Eur. Phys. J. A 31, 15–22 (2007). https://doi.org/10.1140/epja/i2006-10150-5

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