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Direct high-precision mass measurements on 241,243Am, 244Pu, and 249Cf

MPG-Autoren
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Eibach,  Martin
Division Prof. Dr. Klaus Blaum, MPI for Nuclear Physics, Max Planck Society;
Institut für Kernchemie, Johannes Gutenberg-Universität;

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Beyer,  Thomas
Division Prof. Dr. Klaus Blaum, MPI for Nuclear Physics, Max Planck Society;

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Blaum,  Klaus
Division Prof. Dr. Klaus Blaum, MPI for Nuclear Physics, Max Planck Society;

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Nagy,  Szilard
Division Prof. Dr. Klaus Blaum, MPI for Nuclear Physics, Max Planck Society;

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Smorra,  Christian
Division Prof. Dr. Klaus Blaum, MPI for Nuclear Physics, Max Planck Society;

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Wang,  Meng
Division Prof. Dr. Klaus Blaum, MPI for Nuclear Physics, Max Planck Society;
Centre de Spectrométrie Nucléaire et de Spectrométrie de Masse, Université Paris-Sud;
Institute of Modern Physics;

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Zitation

Eibach, M., Beyer, T., Blaum, K., Block, M., Düllmann, C., Eberhardt, K., et al. (2014). Direct high-precision mass measurements on 241,243Am, 244Pu, and 249Cf. Physical Review C, 89(6): 064318. doi:10.1103/PhysRevC.89.064318.


Zitierlink: https://hdl.handle.net/11858/00-001M-0000-001A-10AA-F
Zusammenfassung
The absolute masses of four long-lived transuranium nuclides, 241,243Am, 244Pu, and 249Cf, in the vicinity of the deformed N=152 neutron shell closure have been measured directly with the Penning-trap mass spectrometer TRIGA-TRAP. Our measurements confirm the AME2012 mass values of 241,243Am and 244Pu within one standard deviation, which were indirectly determined, by decay spectroscopy studies. In the case of the249Cf mass, a discrepancy of more than three standard deviations has been observed, affecting absolute masses even in the superheavy element region. The implementation of the mass values into the AME2012 network yields a reduced mass uncertainty for 84 nuclides, particularly for 244Pu and its strongly correlated α decay chains.