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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: Solar and Galactic Composition: A Joint SOHO/ACE Workshop. AIP Conference Proceedings. No.598. American Institute of Physics , Melville, NY, pp. 251-255. ISBN 0-7354-0042-3

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The isotopes of lithium, beryllium, and boron (LiBeB) are known in nature to be produced primarily by CNO spallation and α-α fusion from interactions between cosmic rays and interstellar nuclei. While the dominant source of LiBeB isotopes in the present epoch is cosmic-ray interactions, other sources are known to exist, including the production of ^(7)Li from big bang nucleosynthesis. Precise observations of galactic cosmic-ray LiBeB in addition to accurate modeling of cosmic-ray transport can help to constrain the relative importance among the different production mechanisms. The Cosmic Ray Isotope Spectrometer (CRIS) on the Advanced Composition Explorer (ACE) has measured nuclei with 2 ≲ Z ≲ 30 in the energy range ~30–500 MeV/nucleon since 1997 with good statistical accuracy. We present measurements of the isotopic abundances of LiBeB and discuss these observations in the context of previous cosmic-ray measurements and spectroscopic observations.

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Additional Information:© 2001 American Institute of Physics. Issue Date: 21 November 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
Funding AgencyGrant Number
NASA Goddard Space Flight CenterUNSPECIFIED
Subject Keywords:Galaxy; lithium, beryllium; boron; isotope relative abundance; element relative abundance; cosmic ray interactions; interstellar matter; astronomical techniques
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Other Numbering System NameOther Numbering System ID
Space Radiation Laboratory2001-63
Classification Code:PACS: 98.35.Bd; 98.38.Am; 98.70.Sa; 96.40.Cd
Record Number:CaltechAUTHORS:20111118-100206530
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Official Citation:Measurements of the isotopes of lithium, beryllium, and boron from ACE/CRIS G. A. de Nolfo, N. E. Yanasak, W. R. Binns, A. C. Cummings, E. R. Christian, J. S. George, P. L. Hink, M. H. Israel, R. A. Leske, M. Lijowski, R. A. Mewaldt, E. C. Stone, T. T. von Rosenvinge, and M. E. Wiedenbeck, AIP Conf. Proc. 598, 251 (2001), DOI:10.1063/1.1434007
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:27852
Deposited By: Jason Perez
Deposited On:21 Nov 2011 16:11
Last Modified:03 Mar 2015 21:27

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