Detection of the natural α decay of tungsten

C. Cozzini, G. Angloher, C. Bucci, F. von Feilitzsch, D. Hauff, S. Henry, Th. Jagemann, J. Jochum, H. Kraus, B. Majorovits, V. Mikhailik, J. Ninkovic, F. Petricca, W. Potzel, F. Pröbst, Y. Ramachers, W. Rau, M. Razeti, W. Seidel, M. Stark, L. Stodolsky, A. J. B. Tolhurst, W. Westphal, and H. Wulandari
Phys. Rev. C 70, 064606 – Published 13 December 2004

Abstract

The natural α-decay of W180 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 T12=(1.8±0.2)×1018years 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.

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  • Received 6 August 2004

DOI:https://doi.org/10.1103/PhysRevC.70.064606

©2004 American Physical Society

Authors & Affiliations

C. Cozzini1,*, G. Angloher2, C. Bucci3, F. von Feilitzsch4, D. Hauff2, S. Henry1, Th. Jagemann4, J. Jochum5, H. Kraus1, B. Majorovits1, V. Mikhailik1, J. Ninkovic2, F. Petricca2, W. Potzel4, F. Pröbst2, Y. Ramachers1,†, W. Rau4, M. Razeti4, W. Seidel2, M. Stark4, L. Stodolsky2, A. J. B. Tolhurst1, W. Westphal4, and H. Wulandari4

  • 1Department of Physics, University of Oxford, Oxford OX1 3RH, United Kingdom
  • 2MPI für Physik, Föhringer Ring 6, 80805 Munich, Germany
  • 3Laboratori Nazionali del Gran Sasso, 67010 Assergi, Italy
  • 4Physikdepartment E-15, TU München, James-Franck-Strasse, 85748 Garching, Germany
  • 5Eberhard-Karls-Universität Tübingen, D-72076 Tübingen, Germany

  • *Corresponding author.Email address: c.cozzini@physics.ox.ac.uk
  • Present address: University of Warwick, Coventry CV4 7AL, UK.

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Vol. 70, Iss. 6 — December 2004

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