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Refractory Nuclides in the Cosmic-Ray Source

Wiedenbeck, M. E. and Binns, W. R. and Cummings, A. C. and Davis, A. J. and de Nolfo, G. A. and George, J. S. and Israel, M. S. and Labrador, A. W. and Leske, R. A. and Mewaldt, R. A. and Stone, E. C. and von Rosenvinge, T. T. (2003) Refractory Nuclides in the Cosmic-Ray Source. In: Proceedings of the 28th International Cosmic Ray Conference. Vol.4. International Union of Applied Physics , Tokyo, Japan, pp. 1899-1902.

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New observations of the abundances and energy spectra of the isotopes of Mg, Al, and Si from ACE/CRIS are used to extend our previous results on the composition of refractory nuclides in cosmic-ray source material. For the 18 nuclides considered for elements between Mg and Ni, relative source abundances are generally consistent with solar-system values to within 20%. The ^(58)Fe abundance, taken relative to ^(28)Si, is found to have the largest difference from solar, a factor of ∼ 1.6. We suggest that the compositional similarity between the cosmic-ray source and the solar system can be understood in terms of acceleration of cosmicray refractories out of a well-mixed sample of interstellar matter.

Item Type:Book Section
Related URLs:
URLURL TypeDescription
Wiedenbeck, M. E.0000-0002-2825-3128
Binns, W. R.0000-0001-6110-3407
Cummings, A. C.0000-0002-3840-7696
de Nolfo, G. A.0000-0002-3677-074X
Labrador, A. W.0000-0001-9178-5349
Leske, R. A.0000-0002-0156-2414
Mewaldt, R. A.0000-0003-2178-9111
Stone, E. C.0000-0002-2010-5462
Additional Information:Copyright Universal Academy Press Inc. This work was supported by NASA at Caltech (under grants NAG5-6912 and NAG5-12929), JPL, Washington U. and GSFC.
Group:Space Radiation Laboratory
Funding AgencyGrant Number
Goddard Space Flight CenterUNSPECIFIED
Jet Propulsion LaboratoryUNSPECIFIED
Washington UniversityUNSPECIFIED
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Space Radiation Laboratory2003-16
Record Number:CaltechAUTHORS:20150406-133653562
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:56384
Deposited By: Deborah Miles
Deposited On:15 Apr 2015 03:33
Last Modified:09 Mar 2020 13:19

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