Double-β-decay Q values of Se74 and Ge76

Brianna J. Mount; Matthew Redshaw; Edmund G. Myers

doi:10.1103/PhysRevC.81.032501

Double-β-decay Q values of Se74 and Ge76

Brianna J. Mount, Matthew Redshaw, Edmund G. Myers

Physics

Research output: Contribution to journal › Article › peer-review

67 Scopus citations

Abstract

The atomic masses of Ge74, Se74, Ge76, and Se76 have been determined from cyclotron frequency ratios of pairs of ions simultaneously trapped in a cryogenic Penning trap. Allowing for cancellation of systematic errors in the mass differences between isobars, we determine the Q value for double-electron capture of Se74 to be 1209.240(7) keV, and the Q value for double-electron emission of Ge76 to be 2039.061(7) keV. The new Q2EC value for Se74 precludes a large resonant enhancement for neutrinoless double-electron capture.

Original language	English
Article number	032501
Journal	Physical Review C - Nuclear Physics
Volume	81
Issue number	3
DOIs	https://doi.org/10.1103/PhysRevC.81.032501
State	Published - Mar 23 2010

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10.1103/PhysRevC.81.032501

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abstract = "The atomic masses of Ge74, Se74, Ge76, and Se76 have been determined from cyclotron frequency ratios of pairs of ions simultaneously trapped in a cryogenic Penning trap. Allowing for cancellation of systematic errors in the mass differences between isobars, we determine the Q value for double-electron capture of Se74 to be 1209.240(7) keV, and the Q value for double-electron emission of Ge76 to be 2039.061(7) keV. The new Q2EC value for Se74 precludes a large resonant enhancement for neutrinoless double-electron capture.",

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AU - Myers, Edmund G.

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N2 - The atomic masses of Ge74, Se74, Ge76, and Se76 have been determined from cyclotron frequency ratios of pairs of ions simultaneously trapped in a cryogenic Penning trap. Allowing for cancellation of systematic errors in the mass differences between isobars, we determine the Q value for double-electron capture of Se74 to be 1209.240(7) keV, and the Q value for double-electron emission of Ge76 to be 2039.061(7) keV. The new Q2EC value for Se74 precludes a large resonant enhancement for neutrinoless double-electron capture.

AB - The atomic masses of Ge74, Se74, Ge76, and Se76 have been determined from cyclotron frequency ratios of pairs of ions simultaneously trapped in a cryogenic Penning trap. Allowing for cancellation of systematic errors in the mass differences between isobars, we determine the Q value for double-electron capture of Se74 to be 1209.240(7) keV, and the Q value for double-electron emission of Ge76 to be 2039.061(7) keV. The new Q2EC value for Se74 precludes a large resonant enhancement for neutrinoless double-electron capture.

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DO - 10.1103/PhysRevC.81.032501

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JO - Physical Review C - Nuclear Physics

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IS - 3

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ER -

Double-β-decay Q values of Se74 and Ge76

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