Octupolar-Excitation Penning-Trap Mass Spectrometry for Q-Value Measurement of Double-Electron Capture in Er-164 - INSPIRE

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Octupolar-Excitation Penning-Trap Mass Spectrometry for Q-Value Measurement of Double-Electron Capture in Er-164

S. Eliseev
(
- Heidelberg, Max Planck Inst.
)
,
C. Roux
(
- Heidelberg, Max Planck Inst.
)
,
K. Blaum
(
- Heidelberg, Max Planck Inst.
)
,
M. Block
(
- Darmstadt, GSI
)
,
C. Droese
(
- Greifswald U.
)

Oct 7, 2011

5 pages

Published in:

Phys.Rev.Lett. 107 (2011) 152501

DOI:

10.1103/PhysRevLett.107.152501

View in:

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Abstract: (APS)

The theory of octupolar-excitation ion-cyclotron-resonance mass spectrometry is presented which predicts an increase of up to several orders of magnitude in resolving power under certain conditions. The new method has been applied for a direct Penning-trap mass-ratio determination of the Er164−Dy164 mass doublet. Er164 is a candidate for the search for neutrinoless double-electron capture. However, the measured Qϵϵ value of 25.07(12) keV results in a half-life of 1030 years for a 1 eV Majorana-neutrino mass.

14.60.Lm
21.10.Dr
27.70.+q
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References(23)

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