Direct decay-energy measurement as a route to the neutrino mass

被引：15

作者：

Karthein, J. ^{[1
,2
]}

Atanasov, D. ^{[3
,4
]}

Blaum, K. ^{[2
]}

Eliseev, S. ^{[2
]}

Filianin, P. ^{[2
]}

Lunney, D. ^{[5
]}

Manea, V. ^{[1
,4
]}

Mougeot, M. ^{[5
,6
]}

Neidherr, D. ^{[7
]}

Novikov, Y. ^{[8
,9
]}

Schweikhard, L. ^{[10
]}

Welker, A. ^{[1
,3
]}

Wienholtz, F. ^{[1
,10
]}

Zuber, K. ^{[3
]}

机构：

[1] CERN, Route Meyrin, CH-1211 Geneva, Switzerland

[2] Max Planck Inst Kernphys, D-69117 Heidelberg, Germany

[3] Tech Univ Dresden, D-01062 Dresden, Germany

[4] Katholieke Univ Leuven, Inst Kern & Stralingsfys, B-3001 Leuven, Belgium

[5] Univ Paris Sud, CSNSM CNRS IN2P3, F-91400 Orsay, France

[6] Max Planck Inst Kernphys, D-69117 Heidelberg, Germany

[7] GSI Helmholtzzentrum Schwerionenforsch, D-64291 Darmstadt, Germany

[8] St Petersburg State Univ, Dept Phys, St Petersburg 198504, Russia

[9] Petersburg Nucl Phys Inst, St Petersburg 188300, Russia

[10] Ernst Moritz Arndt Univ Greifswald, Phys Inst, D-17489 Greifswald, Germany

来源：

HYPERFINE INTERACTIONS | 2019年 / 240卷 / 1期

基金：

欧盟地平线“2020”;

关键词：

PI-ICR; -decay; Neutrino mass; High-precision mass spectrometry; TRAP;

D O I：

10.1007/s10751-019-1601-z

中图分类号：

O64 [物理化学（理论化学）、化学物理学]; O56 [分子物理学、原子物理学];

学科分类号：

070203 ; 070304 ; 081704 ; 1406 ;

摘要：

A high-precision measurement of the (CsXe)-Cs-131-Xe-131 ground-to-ground-state electron-capture Q(EC)-value was performed using the ISOLTRAP mass spectrometer at ISOLDE/CERN. The novel PI-ICR technique allowed to reach a relative mass precision m/m of 1.4 10(-9). A mass resolving power m/m exceeding 1 10(7) was obtained in only 1s trapping time. Allowed electron-capture transitions with sub-keV or lower decay energies are of high interest for the direct determination of the (e) mass. The new measurement improves the uncertainty on the ground-to-ground-state Q(EC)-value by a factor 25 precluding the (CsXe)-Cs-131-Xe-131 pair as a feasible candidate for the direct determination of the (e) mass.

引用

页数：9

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