Journal
PHYSICAL REVIEW LETTERS
Volume 107, Issue 15, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.107.152501
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Funding
- Max-Planck Society
- EMMI
- BMBF [06GF9103I, 06DD9054]
- WTZ [07/015]
- Russian Minobrnauki [2.1.1, P1334]
- RFBR [10-02-00450, 09-02-91341]
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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 Er-164-Dy-164 mass doublet. Er-164 is a candidate for the search for neutrinoless double-electron capture. However, the measured Q(epsilon epsilon) value of 25.07(12) keV results in a half-life of 10(30) years for a 1 eV Majorana-neutrino mass.
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