Energies Available For The Double-Beta Decay Of Te-130 And Te-128

Abstract The high resolution mass spectrometer at the University of Manitoba (Manitoba II) has been used to determine the spacings of four mass spectral doublets involving selected isotopes of Xe and Te. These mass differences were combined with existing data, in a least squares analysis, to yield “best” values for the double-beta decay Q -values for 128 Te and 130 Te, viz. 867.2±1.0 and 2528.8±1.3 keV, respectively.