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.2009 May 29;102(21):212502.
doi: 10.1103/PhysRevLett.102.212502. Epub 2009 May 29.

Masses of 130Te and 130Xe and double-beta-decay Q value of 130Te

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Masses of 130Te and 130Xe and double-beta-decay Q value of 130Te

Matthew Redshaw et al. Phys Rev Lett..

Abstract

The atomic masses of 130Te and 130Xe have been obtained by measuring cyclotron frequency ratios of pairs of triply charged ions simultaneously trapped in a Penning trap. The results, with 1 standard deviation uncertainty, are M(130Te)=129.906 222 744(16) u and M(130Xe)=129.903 509 351(15) u. From the mass difference the double-beta-decay Q value of 130Te is determined to be Qbetabeta(130Te)=2527.518(13) keV. This is a factor of 150 more precise than the result of the AME2003 [G. Audi, Nucl. Phys. A729, 337 (2003)10.1016/j.nuclphysa.2003.11.003].

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