THE CHARGE SPECTRUM OF HIGH AND LOW ENERGY HEAVY NUCLEI IN THE COSMIC RADIATION.
Abstract
The charge spectrum of cosmic ray nuclei of sulphur and heavier (Z > or = 16) has been measured at high (E > 7.1 GeV/n), intermediate (E > 1.58 GeV/n), and low (200 < or = E < or = 500 MeV/n) energies. In each case nuclear emulsions flown on ballons were used to detect the nuclei and the ionization was measured using a semi-automated densitometer. These spectra are corrected to the top of the atmosphere and compared with those reported by other workers. The relationship of these spectra to those that might exist at hypothetical sources are considered in terms of the slab model of propagation through interstellar space and it is shown that the results are inconsistent with those obtained for lighter nuclei. A path length distribution that favors short path lengths and that is energy dependent, appears to provide the best fit to the data. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Jul 01, 1969
- Accession Number
- AD0694462
Entities
People
- Cecil Jake Waddington
- Charles E. Long
- P. S. Freier
Organizations
- University of Minnesota