Accession Number : AD0656046

Title :   THE ENERGY DEPENDENCE OF THE FRAGMENTATION PARAMETERS AND MEAN FREE PATHS OF COSMIC RAY NUCLEI WITH Z GREATER THAN OR EQUAL TO 10(+),

Corporate Author : MINNESOTA UNIV MINNEAPOLIS COSMIC RAY GROUP

Personal Author(s) : Cleghorn,T. F. ; Freier,P. S. ; Waddington,C. J.

Report Date : 1967

Pagination or Media Count : 14

Abstract : The fragmentation parameters and interaction mean free paths for VH and H-type cosmic ray nuclei have been measured as functions of energy in nuclear emulsions. It is found that they are essentially independent of energy over the range from 100 MeV/n to 30 GeV/n. The mean free paths of the secondary nuclei produced in observed interactions have also been measured. With two major exceptions, the values of the mean free paths are found to be consistent with an overlap model for nuclear interactions. The value obtained for the secondary L-type nuclei appears to be significantly shorter than that expected from the model calculations while that for the primary VH nuclei appears to be significantly longer. (Author)

Descriptors :   (*COSMIC RAYS, PARTICLE TRAJECTORIES), UPPER ATMOSPHERE, CANADA, INDIA, NUCLEAR REACTIONS, BALLOONS, NUCLEAR MODELS, ENERGY

Subject Categories : Atmospheric Physics
      Nuclear Physics & Elementary Particle Physics

Distribution Statement : APPROVED FOR PUBLIC RELEASE