Observation of trans-iron nuclei in the primary cosmic radiation
Document Type
Article
Publication Date
12-1-1969
Abstract
Interleaved layers of nuclear photographic emulsion and plastic detectors, covering a total area of 21 m2, were exposed to the primary cosmic radiation on high-altitude balloon flights. Flux values, in particles/m2 sr sec, have been estimated to be J(Z>~33)>~2.6×10-5, J(33<~Z<~40)<~1. 9×10-5, J(Z>~70)1×10-6. These values refer to the top of the atmosphere, after extrapolation through 1.5 g/cm2 of detector and 3.5 g/cm2 of atmosphere, for particles with magnetic rigidities above 5 GeV. © 1969 The American Physical Society.
Publication Source (Journal or Book title)
Physical Review Letters
First Page
338
Last Page
342
Recommended Citation
Blanford, G., Friedlander, M., Klarmann, J., Walker, R., Wefel, J., Wells, W., Fleischer, R., Nichols, G., & Price, P. (1969). Observation of trans-iron nuclei in the primary cosmic radiation. Physical Review Letters, 23 (6), 338-342. https://doi.org/10.1103/PhysRevLett.23.338