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New measurement of exotic decay of 225Ac by 14C emission

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Abstract:

The branching ratio of 225Ac decay by emission of 14C was remeasured under improved experimental conditions by using a radioactive source produced at the ISOLDE mass-separator at CERN and a nuclear track detector technique. The result, B = λ14C/λα = (4.5±1.4)10-12, is consistent with the anomalously high value obtained in the 1993 experiment, thus confirming the importance of nuclear-structure effects in this exotic decay.

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Authors and Affiliations

  1. Istituto di Fisica Generale Applicata dell'Università di Milano and INFN, Sezione di Milano, Via Celoria 16, I-20133, Milano, Italy, , , , , , IT

    A. Guglielmetti & R. Bonetti

  2. Laboratoire de Radiochimie, Université de Nice Sophia-Antipolis 06108 Nice Cédex, France, , , , , , FR

    G. Ardisson & V. Barci

  3. CERN, EP Division, Geneva, Switzerland, , , , , , CH

    T. Giles & H.L. Ravn

  4. Institut de Physique Nucléaire, BP N 1 91406 Orsay Cédex, France, , , , , , FR

    M. Hussonnois, J.F. Le Du, C. Le Naour & D. Trubert

  5. Joint Institute for Nuclear Research, Dubna, 141980, Moscow Region, Russia, , , , , , RU

    V.L. Mikheev & S.P. Tretyakova

  6. Dipartimento di Fisica dell'Università di Milano and INFN, Sezione di Milano, Via Celoria 16, I-20133, Milano, Italy, , , , , , IT

    A.L. Pasinetti

Authors
  1. A. Guglielmetti
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  2. R. Bonetti
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  3. G. Ardisson
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  4. V. Barci
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  5. T. Giles
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  6. M. Hussonnois
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  7. J.F. Le Du
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  8. C. Le Naour
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  9. V.L. Mikheev
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  10. A.L. Pasinetti
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  11. H.L. Ravn
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  12. S.P. Tretyakova
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  13. D. Trubert
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Additional information

Received: 20 July 2001 / Accepted: 28 November 2001

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Guglielmetti, A., Bonetti, R., Ardisson, G. et al. New measurement of exotic decay of 225Ac by 14C emission. Eur Phys J A 12, 383–386 (2001). https://doi.org/10.1007/s10050-001-8661-5

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  • DOI: https://doi.org/10.1007/s10050-001-8661-5

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