text{Direct}~Q\text{-Value Determination of the}~\beta^-~\text{Decay of} ~^{187}\text{Re}

text{Direct}~Q\text{-Value Determination of the}~\beta^-~\text{Decay of} ~^{187}\text{Re}

The cyclotron frequency ratio of \(^{187}\mathrm{Os}^{29+}\) to \(^{187}\mathrm{Re}^{29+}\) ions was measured with the Penning-trap mass spectrometer PENTATRAP. The achieved result of \(R=1.000\:000\:013\:882(5)\) is to date the most precise such measurement performed on ions. Furthermore, the total...

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Veröffentlicht in:arXiv.org 2021-08
Hauptverfasser: Filianin, P, Lyu, C, Door, M, Blaum, K, Huang, W J, Haverkort, M, Indelicato, P, Keitel, C H, Kromer, K, Lange, D, Novikov, Y N, Rischka, A, Schüssler, R X, Schweiger, Ch, Sturm, S, Ulmer, S, Harman, Z, Eliseev, S
Format: Artikel
Sprache:eng
Schlagworte:
Beta decay
Cyclotron frequency
Cyclotrons
Physics - Nuclear Experiment
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Zusammenfassung:The cyclotron frequency ratio of \(^{187}\mathrm{Os}^{29+}\) to \(^{187}\mathrm{Re}^{29+}\) ions was measured with the Penning-trap mass spectrometer PENTATRAP. The achieved result of \(R=1.000\:000\:013\:882(5)\) is to date the most precise such measurement performed on ions. Furthermore, the total binding-energy difference of the 29 missing electrons in Re and Os was calculated by relativistic multiconfiguration methods, yielding the value of \(\Delta E = 53.5(10)\) eV. Finally, using the achieved results, the mass difference between neutral \(^{187}\)Re and \(^{187}\)Os, i.e., the \(Q\) value of the \(\beta^-\) decay of \(^{187}\)Re, is determined to be 2470.9(13) eV.
ISSN:2331-8422
DOI:10.48550/arxiv.2108.07039