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.
Observations of the Li, Be, and B isotopes and constraints on cosmic-ray propagation
Advances in Space Research ; 38 , 7 ; 1558-1564
2006-09-08
7 pages
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
Cosmic rays , Galaxy , general , abundances , evolution , ISM
Observations of the Li, Be, and B isotopes and constraints on cosmic-ray propagation
Online Contents | 2006
|Anomalous Cosmic Rays: Observations
Online Contents | 1999
|Anomalous Cosmic Rays: Observations
British Library Conference Proceedings | 1999
|Models for Galactic Cosmic-Ray Propagation
British Library Conference Proceedings | 2001
|