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Measurements of the Isotopes of Lithium, Beryllium, and Boron from ACE/CRIS

de Nolfo, G. A. and Yanasak, N. E. and Binns, W. R. and Cummings, A. C. and Christian, E. R. and George, J. S. and Hink, P. L. and Israel, M. H. and Leske, R. A. and Lijowski, M. and Mewaldt, R. A. and Stone, E. C. and von Rosenvinge, T. T. and Wiedenbeck, M. E. (2001) Measurements of the Isotopes of Lithium, Beryllium, and Boron from ACE/CRIS. In: Proceedings of the 27th International Cosmic Ray Conference. Vol.5. Copernicus Systems and Technology GmbH , Berlin, Germany, pp. 1667-1670.

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The cosmic-ray isotopes of lithium, beryllium, and boron (LiBeB) are generally believed to originate from interactions within the interstellar medium, primarily through CNO spallation. Other sources are known to contribute to the abundance of ^7Li and ^(11)B, most notably the production of ^7Li from big bang nucleosynthesis. Thus, identifying the abundances of the galactic cosmic-ray LiBeB places important constraints on the interpretations of early epoch nucleosynthesis. The Cosmic Ray Isotope Spectrometer (CRIS) on ACE has been measuring isotopic composition from helium through zinc in the energy range ˜70-500 MeV/nucleon since 1997 with high statistical accuracy. We present measurements of the isotopic abundances of LiBeB from CRIS and discuss these observations in the context of previous cosmic-ray measurements and predictions from cosmic-ray transport models.

Item Type:Book Section
Related URLs:
URLURL TypeDescription
de Nolfo, G. A.0000-0002-3677-074X
Binns, W. R.0000-0001-6110-3407
Cummings, A. C.0000-0002-3840-7696
Christian, E. R.0000-0003-2134-3937
Israel, M. H.0000-0002-8104-208X
Leske, R. A.0000-0002-0156-2414
Mewaldt, R. A.0000-0003-2178-9111
Stone, E. C.0000-0002-2010-5462
Wiedenbeck, M. E.0000-0002-2825-3128
Additional Information:© Copernicus Gesellschaft 2001. This work was supported by NASA at NASA Goddard Space Flight Center, the Jet Propulsion Laboratory, Washington University and the California Institute of Technology (under grant NAG5-6912).
Group:Space Radiation Laboratory
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Other Numbering System NameOther Numbering System ID
Space Radiation Laboratory2001-52
Record Number:CaltechAUTHORS:20150303-131355783
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:55481
Deposited By: Deborah Miles
Deposited On:05 Mar 2015 03:51
Last Modified:09 Mar 2020 13:19

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