AbstractThe abundance of Li, Be, and B isotopes in galactic cosmic rays (GCRs) between E=50 and 200MeV/nucleon has been observed by the Cosmic Ray Isotope Spectrometer (CRIS) on NASA’s ACE mission since 1997 with high statistical accuracy. Precise observations of Li, Be, and B can be used to constrain GCR propagation models. We find that a diffusive reacceleration model with parameters that best match CRIS results (e.g., B/C, Li/C, etc.) are also consistent with other GCR observations. A ∼15–20% overproduction of Li and Be in the model predictions is attributed to uncertainties in the production cross-section data. The latter becomes a significant limitation to the study of rare GCR species that are generated predominantly via spallation.


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    Titel :

    Observations of the Li, Be, and B isotopes and constraints on cosmic-ray propagation


    Beteiligte:
    de Nolfo, G.A. (Autor:in) / Moskalenko, I.V. (Autor:in) / Binns, W.R. (Autor:in) / Christian, E.R. (Autor:in) / Cummings, A.C. (Autor:in) / Davis, A.J. (Autor:in) / George, J.S. (Autor:in) / Hink, P.L. (Autor:in) / Israel, M.H. (Autor:in) / Leske, R.A. (Autor:in)

    Erschienen in:

    Advances in Space Research ; 38 , 7 ; 1558-1564


    Erscheinungsdatum :

    2006-09-08


    Format / Umfang :

    7 pages




    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch





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