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

2006/01/01 by G. A. de Nolfo, I. V. Moskalenko, W. R. Binns +14 · 59 citations
Physics and Astronomy · #Astrophysics #Astrophysics and Cosmic Phenomena #COSMIC cancer database #Cosmic ray #Cosmic ray spallation #Dark Matter and Cosmic Phenomena #Isotope #Isotopes of beryllium #Neutron #Nuclear physics #Nucleon #Physics #Solar and Space Plasma Dynamics #Spallation #Ultra-high-energy cosmic ray #astro-ph

paper · pdf · doi:10.1016/j.asr.2006.09.008

published in Advances in Space Research 38(7), 1558-1564 (Elsevier BV) · 9 pages of TeX format with three figures. Accepted for publication to Advances in Space Research (Elsevier)

openalex publication_date 2006/01/01 · arxiv created 2006/11/09 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05

Abstract

The abundance of Li, Be, and B isotopes in galactic cosmic rays (GCR) between E=50-200 MeV/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, B can be used to constrain GCR propagation models. \iffalse Precise observations of Li, Be, and B in addition to well-measured production cross-sections are used to further constrain GCR propagation models. \fi 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.

Citations