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Title: β decay of He 6 into the α + d continuum

Here, the rare β-decay channel of 6He into the α+d continuum was investigated at the REX-ISOLDE facility. Bunches of postaccelerated 6He 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)]×10 –6. 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.
Authors:
 [1] ;  [1] ;  [1] ;  [1] ;  [1] ;  [2] ;  [3] ;  [1] ;  [2] ;  [4] ;  [5] ;  [6] ;  [2] ;  [7] ;  [6] ;  [1] ;  [8] ;  [9] ;  [10] ;  [4] more »;  [4] ;  [8] ;  [4] ;  [11] ;  [6] « less
  1. Univ. of Warsaw, Warszawa (Poland)
  2. Joint Institute for Nuclear Research, Moscow Region (Russia)
  3. Instituto de Estructura de la Materia, Madrid (Spain); ISOLDE, CERN, Geneva (Switzerland)
  4. Institut voor Kern- en Stralingsfysica, Leuven (Belgium)
  5. Joint Institute for Nuclear Research, Moscow Region (Russia); Institute of Nuclear Physics PAN, Krakow (Poland)
  6. ISOLDE, CERN, Geneva (Switzerland)
  7. Univ. of Warsaw, Warszawa (Poland); Warsaw Univ. of Technology, Warszawa (Poland)
  8. Aarhus Univ., Aarhus C (Denmark)
  9. Univ. of Warsaw, Warszawa (Poland); Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
  10. Univ. of Lodz, Lodz (Poland)
  11. Instituto de Estructura de la Materia, Moscow Region (Russia)
Publication Date:
Grant/Contract Number:
AC05-00OR22725
Type:
Accepted Manuscript
Journal Name:
Physical Review. C, Nuclear Physics
Additional Journal Information:
Journal Volume: 92; Journal Issue: 1; Journal ID: ISSN 0556-2813
Publisher:
American Physical Society (APS)
Research Org:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Sponsoring Org:
USDOE
Country of Publication:
United States
Language:
English
Subject:
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
OSTI Identifier:
1338523