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Energy systematics of low-lying Nilsson levels in odd-mass einsteinium isotopes

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Abstract.

The decay of odd-mass mendelevium isotopes ( A = 247-255) has been studied by means of α-γ spectroscopy. Strong evidence for a small α branch in the decay of 253Md was found. γ lines in coincidence with α-decays of 247, 249, 251, 253Md have been observed for the first time. Levels in the einsteinium daughter nuclei were assigned on the basis of α-γ coincidence measurements. An energy systematics of the 7/2-[514] Nilsson level could be established, showing a correlation with the deformation parameter β2 of the corresponding nuclei. The results are compared with theoretical predictions

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Authors and Affiliations

  1. Gesellschaft für Schwerionenforschung mbH, D-64220, Darmstadt, Germany

    F. P. Heßberger, S. Hofmann, D. Ackermann, B. Kindler, I. Kojouharov, P. Kuusiniemi, B. Lommel, R. Mann, K. Nishio & B. Sulignano

  2. Department of Nuclear Physics, Comenius University, SK-84215, Bratislava, Slovakia

    S. Antalic, B. Streicher & S. Saro

  3. Institut für Kernphysik, Johann Wolfgang Goethe-Universität, D-60054, Frankfurt am Main, Germany

    S. Hofmann

  4. Institut für Physik, Johannes Gutenberg-Universität, D-55099, Mainz, Germany

    D. Ackermann & B. Sulignano

  5. Department of Physics, University of Jyväskylä, FIN-40361, Jyväskylä, Finland

    P. Kuusiniemi & M. Leino

  6. Japan Atomic Energy Research Institute (JAERI), 319-1195, Tokai, Ibaraki, Japan

    K. Nishio

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  1. F. P. Heßberger
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  2. S. Antalic
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  4. S. Hofmann
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  7. I. Kojouharov
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  8. P. Kuusiniemi
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  9. M. Leino
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  11. R. Mann
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Heßberger, F.P., Antalic, S., Streicher, B. et al. Energy systematics of low-lying Nilsson levels in odd-mass einsteinium isotopes. Eur. Phys. J. A 26, 233–239 (2005). https://doi.org/10.1140/epja/i2005-10171-6

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  • DOI: https://doi.org/10.1140/epja/i2005-10171-6

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