Direct determination of the atomic mass difference of 187Re and 187Os for neutrino physics and cosmochronology

被引：25

作者：

Nesterenko, D. A. ^{[1
,2
]}

Eliseev, S. ^{[1
]}

Blaum, K. ^{[1
]}

Block, M. ^{[3
]}

Chenmarev, S. ^{[1
,4
]}

Doerr, A. ^{[1
]}

Droese, C. ^{[5
,6
]}

Filianin, P. E. ^{[1
,4
]}

Goncharov, M. ^{[1
]}

Ramirez, E. Minaya ^{[1
]}

Novikov, Yu. N. ^{[1
,2
,4
]}

Schweikhard, L. ^{[5
]}

Simon, V. V. ^{[3
,6
]}

机构：

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

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

[3] GSI Helmholtzzentrum Schwerionenforsch GmbH, D-64291 Darmstadt, Germany

[4] St Petersburg State Univ, Fac Phys, Peterhof 198904, Russia

[5] Ernst Moritz Arndt Univ Greifswald, Inst Phys, D-17487 Greifswald, Germany

[6] Helmholtzinst Mainz, D-55099 Mainz, Germany

来源：

PHYSICAL REVIEW C | 2014年 / 90卷 / 04期

关键词：

STELLAR INTERIORS; PENNING TRAP; BETA-DECAY; SHIPTRAP;

D O I：

10.1103/PhysRevC.90.042501

中图分类号：

O57 [原子核物理学、高能物理学];

学科分类号：

070202 ;

摘要：

For the first time a direct determination of the atomic mass difference of Re-187 and Os-187 has been performed with the Penning-trap mass spectrometer SHIPTRAP applying the novel phase-imaging ion-cyclotron-resonance technique. The obtained value of 2492(30(stat))(15(sys)) eV is in excellent agreement with the Q values determined indirectly with microcalorimetry and thus resolves a long-standing discrepancy with older proportional counter measurements. This is essential for the determination of the neutrino mass from the beta(-) decay of Re-187 as planned in future microcalorimetric measurements. In addition, an accurate mass difference of Re-187 and Os-187 is also important for the assessment of Re-187 for cosmochronology.

引用

页数：5

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