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Direct Q-Value Determination of the β− Decay of 187Re

Authors :
Filianin, P.
Lyu, C.
Door, M.
Blaum, K.
Huang, W.J.
Haverkort, M.
Indelicato, P.
Keitel, C.H.
Kromer, K.
Lange, D.
Novikov, Y.N.
Rischka, A.
Schüssler, R.X.
Schweiger, Ch.
Sturm, S.
Ulmer, S.
Harman, Z.
Eliseev, S.
Quantum Gases & Quantum Information (WZI, IoP, FNWI)
Source :
Physical Review Letters, Physical Review Letters, 127(7):072502. American Physical Society
Publication Year :
2021

Abstract

The cyclotron frequency ratio of 187Os29+ to 187Re29+ ions was measured with the Penning-trap mass spectrometer PENTATRAP. The achieved result of R=1.000 000 013 882(5) is to date the most precise such measurement performed on ions. Furthermore, the total binding-energy difference of the 29 missing electrons in Re and Os was calculated by relativistic multiconfiguration methods, yielding the value of ΔE=53.5(10) eV. Finally, using the achieved results, the mass difference between neutral 187Re and 187Os, i.e., the Q value of the β-− decay of 187Re, is determined to be 2470.9(13) eV.

Details

ISSN :
00319007
Database :
OpenAIRE
Journal :
Physical Review Letters, Physical Review Letters, 127(7):072502. American Physical Society
Accession number :
edsair.dedup.wf.001..9c9b464774796f37b0095e0584c5b26d