Physics – Nuclear Physics
Scientific paper
Jun 1979
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979ap%26ss..63...35l&link_type=abstract
Astrophysics and Space Science, vol. 63, no. 1, June 1979, p. 35-56.
Physics
Nuclear Physics
15
Astronomical Models, Charged Particles, Cosmic Rays, Galactic Radiation, Mass Ratios, Nuclei (Nuclear Physics), Boundary Conditions, Boundary Value Problems, Distribution Functions
Scientific paper
Recent observations of the charge and energy spectra of cosmic-ray nuclei are used to construct secondary-to-primary charge ratios at the two ends of the charge spectrum. These ratios are found to be inconsistent with the ad hoc leaky-box model of cosmic-ray propagation which leads to an exponential pathlength distribution. Models for which the pathlength distribution function is deficient in short pathlengths provide a more consistent picture. Several of these models, both ad hoc and physical, are investigated. The physical model considered is one for which detailed galactic propagation parameters and boundary conditions are used and for which there exist no near sources of cosmic rays over a time interval corresponding to a few times the cosmic-ray age.
Lezniak J. A.
Webber William R.
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