Nuclear Astrophysics

The European Physical Journal A - Hadrons and Nuclei

, Volume 28, Issue 3, pp 375-377

First online:

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

  • B. WangAffiliated withChina Institute of Atomic Energy
  • , S. YanAffiliated withChina Institute of Atomic Energy
  • , B. LimataAffiliated withDipartimento di Scienze Ambientale, Seconda Università di NapoliINFN
  • , F. RaiolaAffiliated withExperimentalphysik III, Ruhr-Universität Bochum
  • , M. AliottaAffiliated withSchool of Physics, University of Edinburgh
  • , H. W. BeckerAffiliated withDynamitron-Tandem-Laboratorium, Ruhr-Universität Bochum
  • , J. CruzAffiliated withCentro de Fısica Nuclear, Universidade de Lisboa
  • , N. De CesareAffiliated withDipartimento di Scienze della Vita, Seconda Università di NapoliINFN
  • , A. D'OnofrioAffiliated withDipartimento di Scienze Ambientale, Seconda Università di NapoliINFN
    • , Z. FülöpAffiliated withAtomki
    • , L. GialanellaAffiliated withDipartimento di Scienze Fisiche, Università Federico IIINFN
    • , G. GyürkyAffiliated withAtomki
    • , G. ImbrianiAffiliated withDipartimento di Scienze Fisiche, Università Federico IIINFN
    • , A. JesusAffiliated withCentro de Fısica Nuclear, Universidade de Lisboa
    • , J. P. RibeiroAffiliated withCentro de Fısica Nuclear, Universidade de Lisboa
    • , V. RocaAffiliated withDipartimento di Scienze Fisiche, Università Federico IIINFN
    • , D. RogallaAffiliated withExperimentalphysik III, Ruhr-Universität Bochum
    • , C. RolfsAffiliated withExperimentalphysik III, Ruhr-Universität Bochum Email author 
    • , M. RomanoAffiliated withDipartimento di Scienze Fisiche, Università Federico IIINFN
    • , D. SchürmannAffiliated withExperimentalphysik III, Ruhr-Universität Bochum
    • , E. SomorjaiAffiliated withAtomki
    • , F. StriederAffiliated withExperimentalphysik III, Ruhr-Universität Bochum
    • , F. TerrasiAffiliated withDipartimento di Scienze Ambientale, Seconda Università di NapoliINFN

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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