High-precision Mass Measurements of 203-207Rn and 213Ra with SHIPTRAP

C. Droese, D. Ackermann, L. -L. Andersson, K. Blaum, M. Block, M. Dworschak, M. Eibach, S. Eliseev, Ulrika Forsberg, E. Haettner, F. Herfurth, F. P. Hessberger, S. Hofmann, J. Ketelaer, G. Marx, E. Minaya Ramirez, D. Nesterenko, Yu. N. Novikov, W. R. Plass, D. RodriguezDirk Rudolph, C. Scheidenberger, L. Schweikhard, S. Stolze, P. G. Thirolf, C. Weber

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    Abstract

    The masses of the nuclides Rn203-207 and Ra-213 were measured directly for the first time with the Penning-trap mass spectrometer SHIPTRAP at GSI Darmstadt. The results confirm the previously determined mass values. The mass uncertainties for Rn-205 and Ra-213 were significantly reduced. The results are relevant for the investigation of the nuclear shell structure between N = 82 and N = 126. As an indicator of structural changes the two-neutron separation energies S-2n(Z, N) have been studied.
    Original languageEnglish
    Pages (from-to)13-19
    JournalEuropean Physical Journal A. Hadrons and Nuclei
    Volume49
    Issue number1
    DOIs
    Publication statusPublished - 2013

    Subject classification (UKÄ)

    • Subatomic Physics

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