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Primary and secondary contributions to arriving abundances of cosmic-ray nuclides

Wiedenbeck, M. E. and Binns, W. R. and Cummings, A. C. and de Nolfo, G. A. and Israel, M. H. and Leske, R. A. and Mewaldt, R. A. and Ogliore, R. C. and Stone, E. C. and von Rosenvinge, T. T. (2007) Primary and secondary contributions to arriving abundances of cosmic-ray nuclides. In: Proceedings of the 30th International Cosmic Ray Conference. International Cosmic Ray Conference. Vol.2. Universidad Nacional Autónoma de México , Merida, Yucatan, Mexico, pp. 149-152. http://resolver.caltech.edu/CaltechAUTHORS:20160722-135442634

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Abstract

The arriving abundances of a variety of cosmic-ray nuclides consist of comparable amounts of primary material produced by stellar nucleosynthesis and secondary matter resulting from fragmentation of heavier nuclei by collisions during interstellar propagation. In order to utilize such species in studies of cosmic-ray source composition it is necessary to determine the secondary fraction present in the arriving material and to assess the uncertainty in this determination. We have extracted the primary and secondary contributions to the arriving abundances for isotopes of elements between B and Ni by using 1) measurements of cosmic-ray elemental and isotopic composition obtained from the Cosmic Ray Isotope Spectrometer (CRIS) instrument on the Advanced Composition Explorer (ACE) spacecraft, 2) a data base of measured and calculated fragmentation cross sections, and 3) a leaky box model of interstellar propagation. We present derived decompositions and discuss their implications for studies of the composition of cosmic-ray source material. This work was supported by NASA at Caltech (under grant NAG5-12929), JPL, Washington University, and GSFC.


Item Type:Book Section
Related URLs:
URLURL TypeDescription
http://adsabs.harvard.edu/abs/2008ICRC....2..149WADSArticle
Additional Information:Copyright Universidad Nacional Autónoma de México. This work was supported by NASA at Caltech (under grant NAG5-12929), JPL, Washington University, and GSFC.
Group:Space Radiation Laboratory
Funders:
Funding AgencyGrant Number
NASANAG5-12929
Goddard Space Flight CenterUNSPECIFIED
Other Numbering System:
Other Numbering System NameOther Numbering System ID
Space Radiation Laboratory2008-33
Record Number:CaltechAUTHORS:20160722-135442634
Persistent URL:http://resolver.caltech.edu/CaltechAUTHORS:20160722-135442634
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:69169
Collection:CaltechAUTHORS
Deposited By: Deborah Miles
Deposited On:28 Jul 2016 21:10
Last Modified:09 Mar 2017 05:49

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