• Open Access

β decay of He6 into the α+d continuum

M. Pfützner, W. Dominik, Z. Janas, C. Mazzocchi, M. Pomorski, A. A. Bezbakh, M. J. G. Borge, K. Chrapkiewicz, V. Chudoba, R. Frederickx, G. Kamiński, M. Kowalska, S. Krupko, M. Kuich, J. Kurcewicz, A. A. Lis, M. V. Lund, K. Miernik, J. Perkowski, R. Raabe, G. Randisi, K. Riisager, S. Sambi, O. Tengblad, and F. Wenander
Phys. Rev. C 92, 014316 – Published 23 July 2015

Abstract

The rare β-decay channel of He6 into the α+d continuum was investigated at the REX-ISOLDE facility. Bunches of postaccelerated He6 ions were implanted into the optical time projection chamber (OTPC), where the decays with emission of charged particles were recorded. This novel technique allowed us to extend the low-energy end of the spectrum down to 150 keV in α+d center of mass, corresponding to a deuteron energy of 100 keV. The branching ratio for this process amounts to [2.78±0.07(stat)±0.17(sys)]×106. The shape of the spectrum is found to be in a good agreement with a three-body model, while the total intensity is about 20% larger than the predicted one.

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  • Received 10 June 2015

DOI:https://doi.org/10.1103/PhysRevC.92.014316

This article is available under the terms of the Creative Commons Attribution 3.0 License. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI.

Published by the American Physical Society

Authors & Affiliations

M. Pfützner1, W. Dominik1, Z. Janas1, C. Mazzocchi1, M. Pomorski1, A. A. Bezbakh2, M. J. G. Borge3,4, K. Chrapkiewicz1, V. Chudoba2, R. Frederickx5, G. Kamiński2,6, M. Kowalska4, S. Krupko2, M. Kuich1,7, J. Kurcewicz4, A. A. Lis1, M. V. Lund8, K. Miernik1,9, J. Perkowski10, R. Raabe5, G. Randisi5, K. Riisager8, S. Sambi5, O. Tengblad3, and F. Wenander4

  • 1Faculty of Physics, University of Warsaw, Pasteura 5, 02-093 Warszawa, Poland
  • 2Joint Institute for Nuclear Research, 141980 Dubna, Moscow Region, Russia
  • 3Instituto de Estructura de la Materia, CSIC, E-28006 Madrid, Spain
  • 4ISOLDE, CERN, CH-1211 Geneva 23, Switzerland
  • 5KU Leuven, Instituut voor Kern- en Stralingsfysica, 3001 Leuven, Belgium
  • 6Institute of Nuclear Physics PAN, 31-342 Kraków, Poland
  • 7Faculty of Physics, Warsaw University of Technology, 00-662 Warszawa, Poland
  • 8Department of Physics and Astronomy, Aarhus University, DK-8000 Aarhus C, Denmark
  • 9Physics Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, USA
  • 10Faculty of Physics and Applied Computer Science, University of Łódź, 90-236 Łódź, Poland

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Vol. 92, Iss. 1 — July 2015

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