Direct determination of the atomic mass difference of<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mmultiscripts><mml:mi mathvariant="normal">Re</mml:mi><mml:mprescripts /><mml:none /><mml:mn>187</mml:mn></mml:mmultiscripts></mml:math>and<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mmultiscripts><mml:mi mathvariant="normal">Os</mml:mi><mml:mprescripts /><mml:none /><mml:mn>187</mml:mn></mml:mmultiscripts></mml:math>for neutrino physics and cosmochronology

Nesterenko, D. A.; Eliseev, Sergey; Blaum, Klaus; Block, M.; Chenmarev, S.; Dörr, Andreas; Droese, C.; Filianin, Pavel; Goncharov, Mikhail; Ramirez, E. Minaya; Novikov, Yu. N.; Schweikhard, L.; Simon, Vanessa V.

doi:10.1103/physrevc.90.042501

Cited by 29 publications

(24 citation statements)

References 29 publications

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“…It has been shown to offer a 40-fold increase in the resolving power and a fivefold gain for the precision of the cyclotron-frequency determination compared to the Ramsey ToF-ICR technique. The PI-ICR technique has been applied for high-precision determination of mass differences of stable and long-lived nuclides at SHIPTRAP [16,17,18]. In this article, we report on the implementation of the PI-ICR technique at the JYFLTRAP double Penning trap mass spectrometer [19] at the IGISOL facility in the Accelerator Laboratory of the University of Jyväskylä.…”

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Phase-Imaging Ion-Cyclotron-Resonance technique at the JYFLTRAP double Penning trap mass spectrometer

et al. 2018

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The Phase-Imaging Ion-Cyclotron-Resonance (PI-ICR) technique has been commissioned at the JYFLTRAP double Penning trap mass spectrometer. This technique is based on projecting the ion motion in the Penning trap onto a position-sensitive multichannel-plate ion detector. Mass measurements of stable 85 Rb + and 87 Rb + ions with well-known mass values show that relative uncertainties ∆m/m ≤ 7 · 10 −10 are possible to reach with the PI-ICR technique at JYFLTRAP. The significant improvement both in resolving power and in precision compared to the conventional Time-of-Flight Ion Cyclotron Resonance technique will enable measurements of close-lying isomeric states and of more exotic isotopes as well as ultra-high precision measurements required, e.g., for neutrino physics. In addition, a new phase-dependent cleaning method based on the differences in the accumulated cyclotron motion phases has been demonstrated with short-lived 127 In + and 127m In + ions.

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Phase-Imaging Ion-Cyclotron-Resonance technique at the JYFLTRAP double Penning trap mass spectrometer

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“…Presently, only high-precision Penning-trap mass spectrometry is capable of determining mass differences of nuclides relevant to the neutrino-mass determination with the required uncertainty (see, e.g., Refs. [12][13][14]).…”

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Direct Measurement of the Mass Difference ofHo163andDy163
Eliseev
¹
,
Blaum
²
,
Block
³

et al. 2015
Phys. Rev. Lett.
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The atomic mass difference of (163)Ho and (163)Dy has been directly measured with the Penning-trap mass spectrometer SHIPTRAP applying the novel phase-imaging ion-cyclotron-resonance technique. Our measurement has solved the long-standing problem of large discrepancies in the Q value of the electron capture in (163)Ho determined by different techniques. Our measured mass difference shifts the current Q value of 2555(16) eV evaluated in the Atomic Mass Evaluation 2012 [G. Audi et al., Chin. Phys. C 36, 1157 (2012)] by more than 7σ to 2833(30(stat))(15(sys)) eV/c(2). With the new mass difference it will be possible, e.g., to reach in the first phase of the ECHo experiment a statistical sensitivity to the neutrino mass below 10 eV, which will reduce its present upper limit by more than an order of magnitude.

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“…Compared to the conventional TOF-ICR technique, the PI-ICR method offers a gain in precision and resolving power of approximately 5 and 50, respectively. This has made it feasible to carry out measurements of mass ratios of long-lived nuclides with an uncertainty of just a few tens of eV at on-line Penning-trap facilities (Nesterenko et al, 2014;Eliseev et al, 2015;Karthein et al, 2019 (Block et al, 2007) and three pairs have been investigated with the mass spectrometers JYFLTRAP (Kolhinen et al, 2004) and TRIGATRAP (Ketelaer et al, 2008) and the Florida State University Penning trap (Shi, Redshaw, and Myers, 2005), which are in many aspects similar to SHIPTRAP, the experiments on the determination of the Q values are described here by the example of the SHIPTRAP mass spectrometer.…”

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Neutrinoless double-electron capture

et al. 2020

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Double-beta processes play a key role in the exploration of neutrino and weak interaction properties, and in the searches for effects beyond the standard model. During the last half century many attempts were undertaken to search for double-beta decay with emission of two electrons, especially for its neutrinoless mode 0ν2β − , the latter having still not been observed. Double-electron capture (2EC)was not yet in focus because of its in general lower transition probability. However, the rate of neutrinoless double-electron capture 0ν2EC can experience a resonance enhancement by many orders of magnitude when the initial and final states are energetically degenerate. In the resonant case, the sensitivity of the 0ν2EC process can approach the sensitivity of the 0ν2β − decay in the search for the Majorana mass of neutrinos, right-handed currents, and other new physics. An overview of the main experimental and theoretical results obtained during the last decade in this field is presented. The experimental part outlines search results of 2EC processes and measurements of the decay energies for possible resonant 0ν2EC transitions. An unprecedented precision in the determination of decay energies with Penning traps has allowed one to refine the values of the degeneracy parameter for all previously known near-resonant decays and has reduced the rather large uncertainties in the estimate of the 0ν2EC half-lives. The theoretical part contains an updated analysis of the electron shell effects and an overview of the nuclear-structure models, in which the nuclear matrix elements of the 0ν2EC decays are calculated. One can conclude that the decay probability of 0ν2EC can experience a significant enhancement in several nuclides.

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Direct determination of the atomic mass difference ofRe187andOs187for neutrino physics and cosmochronology

Cited by 29 publications

References 29 publications

Phase-Imaging Ion-Cyclotron-Resonance technique at the JYFLTRAP double Penning trap mass spectrometer

Phase-Imaging Ion-Cyclotron-Resonance technique at the JYFLTRAP double Penning trap mass spectrometer

Direct Measurement of the Mass Difference ofHo163andDy163
Eliseev
¹
,
Blaum
²
,
Block
³

et al. 2015
Phys. Rev. Lett.
Self Cite
143
1
88
0
View full text Add to dashboard Cite

Neutrinoless double-electron capture

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Direct determination of the atomic mass difference ofRe187andOs187for neutrino physics and cosmochronology

Cited by 29 publications

References 29 publications

Phase-Imaging Ion-Cyclotron-Resonance technique at the JYFLTRAP double Penning trap mass spectrometer

Phase-Imaging Ion-Cyclotron-Resonance technique at the JYFLTRAP double Penning trap mass spectrometer

Direct Measurement of the Mass Difference ofHo163andDy163Eliseev1, Blaum2, Block3 et al. 2015Phys. Rev. Lett.Self Cite1431880View full textAdd to dashboardCite

Neutrinoless double-electron capture

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Direct Measurement of the Mass Difference ofHo163andDy163
Eliseev
¹
,
Blaum
²
,
Block
³

et al. 2015
Phys. Rev. Lett.
Self Cite
143
1
88
0
View full text Add to dashboard Cite