THE ENERGY DEPENDENCE OF THE ABUNDANCE OF LITHIUM, BERYLLIUM, AND BORON IN THE PRIMARY COSMIC RADIATION: OBSERVATIONS AT FORT CHURCHILL,
Abstract
The relative abundance of Lithium, Beryllium, Boron, and the S-group nuclei has been determined at two different energies with the help of a pure nuclear emulsion stack flown from Fort Churchill, Canada (lambda = 70.5) on 4 August, 1962 under a total of 4.7 g/sq. cm of residual atmosphere. The ratio of the L to S nuclei, LS, at the top of the atmosphere between 200-700 Mev/n and > 700 Mev/n was determined as 0.41 = 0.08 and 0.19 = 0.03 respectively. The results of both the absolute flux values of L and S-group nuclei as well as their ratios are in accord with other investigations. Combined with the evidence from the measurements of He3He in the same stack, our results indicate that low energy cosmic ray nuclei have traversed about twice as much hydrogen as high energy particles. The results rule out an accelerating mechanism of the Fermi type but may be explained by a source-trapping mechanism. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Oct 13, 1964
- Accession Number
- AD0608770
Entities
People
- G. D. Badhwar
- M. F. Kaplon
- S. N. Devanathan
Organizations
- University of Rochester