Phys. Rev. C 70, 064606 (2004) [6 pages]Detection of the natural α decay of tungstenReceived 6 August 2004; published 13 December 2004 The natural α-decay of 180W has been unambiguously detected for the first time. The α peak is found in a (γ, β, and neutron)-free background spectrum. This has been achieved by the simultaneous measurement of phonon and light signals with the CRESST (Cryogenic Rare Event Search with Superconducting Thermometers) cryogenic detectors. A half-life of T1∕2=(1.8±0.2)×1018 years and an energy release of Q=[2516.4±1.1(stat.)±1.2(sys.)] keV have been measured. New limits are also set on the half-lives of the other naturally occurring tungsten isotopes. © 2004 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevC.70.064606
DOI:
10.1103/PhysRevC.70.064606
PACS:
23.60.+e, 07.20.Mc, 27.70.+q, 29.40.Mc
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