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The Charge and Isotopic Composition of Z ≥ 10 Nuclei in the Cosmic Ray Source

Published online by Cambridge University Press:  14 August 2015

W. R. Webber
W. R. Webber*
Affiliation:
Space Science Center, University of New Hampshire, Durham, N. H. 03824

Extract

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Interstellar fragmentation provides the greatest contribution to the abundance of cosmic ray nuclei with Z = 17–25 observed at earth. The usual procedure to estimate the source abundance of these nuclei is to correct for this interstellar fragmentation using a propagation model and a set of fragmentation parameters for Fe nuclei and its products. Only a fraction of these fragmentation parameters have actually been measured and the accuracy of these as well as the semi empirical parameters used for the unmeasured cross sections is no better than ± 10–15%. As a result the actual source abundances of these nuclei can only be deduced to an accuracy of ± 2–3% of the Fe abundance.

Type
Research Article
Information
Symposium - International Astronomical Union , Volume 94: Origin of Cosmic Rays , 1981 , pp. 31 - 32
Copyright
Copyright © Reidel 1981 

References

Cook, W.R., Stone, E.C. and Vogt, R.E., Ap. J. (in press).Google Scholar
Israel, M.H., Klarmann, J., Love, P.L., and Tueller, J., 1979, Proc. 16th Int. Cosmic Ray Conf., Kyoto, 1, 323.Google Scholar
Lezniak, J.A., and Webber, W.R., 1978, Ap. J., 223, 676.Google Scholar
Menwaldt, R.A., Stone, E.C., Vogt, R.E., 1979, Ap., J., 231, L97 Google Scholar
Webber, W.R., Kish, J., and Simpson, G., 1979a, Proc. 16th Int. Cosmic Ray Conf., Kyoto, 1, 424.Google Scholar
Webber, W.R., Kish, J., and Simpson, G., 1979b, Proc. 16th Int. Cosmic Ray Conf., Kyoto, 1, 430.Google Scholar
Young, J.S., 1979, , University of Minnesota.Google Scholar