Abstract
The natural -decay of has been unambiguously detected for the first time. The peak is found in a (, , 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 and an energy release of have been measured. New limits are also set on the half-lives of the other naturally occurring tungsten isotopes.
- Received 6 August 2004
DOI:https://doi.org/10.1103/PhysRevC.70.064606
©2004 American Physical Society