Evidence for the deficiency of short cosmic ray pathlengths and a physically realistic explanation — The nonearsources model
Abstract
From our recent observations of the charge and energy spectra of cosmicray nuclei we have constructed secondarytoprimary charge ratios at the two ends of the charge spectrum. These ratios are found to be inconsistent with thead hoc leakybox model of cosmicray 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 are investigated, bothad hoc and physical. The physical model considered here is one for which detailed galactic propagation parameters and boundary conditions are used and for which there exists no near sources of cosmic rays over a time interval corresponding to a few times the cosmicray age.
 Publication:

Astrophysics and Space Science
 Pub Date:
 June 1979
 DOI:
 10.1007/BF00647745
 Bibcode:
 1979Ap&SS..63...35L
 Keywords:

 Astronomical Models;
 Charged Particles;
 Cosmic Rays;
 Galactic Radiation;
 Mass Ratios;
 Nuclei (Nuclear Physics);
 Boundary Conditions;
 Boundary Value Problems;
 Distribution Functions;
 Space Radiation