Journal
PHYSICAL REVIEW C
Volume 64, Issue 2, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevC.64.024308
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Molybdenum extracted from geologically old zircons shows evidence for enhanced levels of Mo-96, resulting from the double beta decay of Zr-96. Evidence of nuclear fission in Mo-95, Mo-97, Mo-98, and Mo-100 extracted from the old zircons accompanies the double beta decay of Zr-96, and is comparable in magnitude to the excess Mo-96. Zircons are excellent minerals for an experiment of this nature, since zircon U-Pb geochronology demonstrates that zircons have remained as closed isotopic systems over eons of time. The experimental data indicate that the half-life of Zr-96 double beta decay is (9.4+/-3.2) x 10(18) yr and is in good agreement with the theoretically predicted half-life for the Zr-96 decay to Mo-96 occurring as a two neutrino decay.
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