Change of the 7Be electron capture half-life in metallic environments

  • B. Wang
  • S. Yan
  • B. Limata
  • F. Raiola
  • M. Aliotta
  • H. W. Becker
  • J. Cruz
  • N. De Cesare
  • A. D'Onofrio
  • Z. Fülöp
  • L. Gialanella
  • G. Gyürky
  • G. Imbriani
  • A. Jesus
  • J. P. Ribeiro
  • V. Roca
  • D. Rogalla
  • C. Rolfs
  • M. Romano
  • D. Schürmann
  • E. Somorjai
  • F. Strieder
  • F. Terrasi
Nuclear Astrophysics

Abstract.

For the electron capture of 7Be in the metallic environments Pd and In the 7Be half-life was observed to increase by 0.9±0.2 and 0.7±0.2%, respectively, while in the insulator Li2O it was unchanged within experimental error (all samples cooled to T = 12K). The observations are consistent with the predictions of the Debye plasma model applied to the quasi-free electrons in the metals.

PACS.

26.20.+f Hydrostatic stellar nucleosynthesis 27.30.+t 20 ⩽ A ⩽ 38 21.10.Tg Lifetimes 

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Copyright information

© Società Italiana di Fisica and Springer-Verlag 2006

Authors and Affiliations

  • B. Wang
    • 1
  • S. Yan
    • 1
  • B. Limata
    • 2
    • 3
  • F. Raiola
    • 4
  • M. Aliotta
    • 5
  • H. W. Becker
    • 6
  • J. Cruz
    • 7
  • N. De Cesare
    • 8
    • 3
  • A. D'Onofrio
    • 2
    • 3
  • Z. Fülöp
    • 9
  • L. Gialanella
    • 10
    • 3
  • G. Gyürky
    • 9
  • G. Imbriani
    • 10
    • 3
  • A. Jesus
    • 7
  • J. P. Ribeiro
    • 7
  • V. Roca
    • 10
    • 3
  • D. Rogalla
    • 4
  • C. Rolfs
    • 4
  • M. Romano
    • 10
    • 3
  • D. Schürmann
    • 4
  • E. Somorjai
    • 9
  • F. Strieder
    • 4
  • F. Terrasi
    • 2
    • 3
  1. 1.China Institute of Atomic EnergyBeijingPRC
  2. 2.Dipartimento di Scienze AmbientaleSeconda Università di NapoliCasertaItaly
  3. 3.INFNNapoliItaly
  4. 4.Experimentalphysik IIIRuhr-Universität BochumBochumGermany
  5. 5.School of PhysicsUniversity of EdinburghUK
  6. 6.Dynamitron-Tandem-LaboratoriumRuhr-Universität BochumBochumGermany
  7. 7.Centro de Fısica NuclearUniversidade de LisboaPortugal
  8. 8.Dipartimento di Scienze della VitaSeconda Università di NapoliCasertaItaly
  9. 9.AtomkiDebrecenHungary
  10. 10.Dipartimento di Scienze FisicheUniversità Federico IINapoliItaly

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