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Direct determination of the atomic mass difference of 187Re and 187Os for neutrino physics and cosmochronology

MPG-Autoren

Nesterenko,  D.A.
Division Prof. Dr. Klaus Blaum, MPI for Nuclear Physics, Max Planck Society;
Petersburg Nuclear Physics Institute, Gatchina;

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Eliseev,  Sergey
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;

Chenmarev,  S.
Division Prof. Dr. Klaus Blaum, MPI for Nuclear Physics, Max Planck Society;
Physics Faculty of St. Petersburg State University;

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

Filianin,  P.E.
Division Prof. Dr. Klaus Blaum, MPI for Nuclear Physics, Max Planck Society;
Physics Faculty of St. Petersburg State University;

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

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

Novikov,  Yu.N.
Division Prof. Dr. Klaus Blaum, MPI for Nuclear Physics, Max Planck Society;
Petersburg Nuclear Physics Institute, Gatchina;
Physics Faculty of St. Petersburg State University;

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Zitation

Nesterenko, D., Eliseev, S., Blaum, K., Block, M., Chenmarev, S., Dörr, A., et al. (2014). Direct determination of the atomic mass difference of 187Re and 187Os for neutrino physics and cosmochronology. Physical Review C, 90(4): 042501(R). doi:10.1103/PhysRevC.90.042501.


Zitierlink: http://hdl.handle.net/11858/00-001M-0000-0024-24FF-9
Zusammenfassung
For the first time a direct determination of the atomic mass difference of <sup>187</Sup>Re and <sup>187</Sup>Os has been performed with the Penning-trap mass spectrometer SHIPTRAP applying the novel phase-imaging ion-cyclotron-resonance technique. The obtained value of 2492(30<sub>stat</sub>)(15<sub>sys</sub>) eV is in excellent agreement with the Q values determined indirectly with microcalorimetry and thus resolves a long-standing discrepancy with older proportional counter measurements. This is essential for the determination of the neutrino mass from the β<sup>-</Sup> decay of <sup>187</Sup>Re as planned in future microcalorimetric measurements. In addition, an accurate mass difference of <sup>187</Sup>Re and <sup>187</Sup>Os is also important for the assessment of <sup>187</Sup>Re for cosmochronology.