The direct observation of cosmic ray composition from JACEE.
Abstract
The Japanese-American Cooperative Emulsion Experiment (JACEE) group has performed direct observation of cosmic ray composition (proton through iron) at energies 1012 to 1015eV in 10 balloon flights. No significant changes in spectral index for protons up to 500 TeV and higher intensity for helium above 2 TeV were observed. For heavier elements, a general tendency of intensity enhancement of medium heavies in the relative abundance above about 10 TeV/amu was observed.
- Publication:
-
Astrophysical Aspects of the Most Energetic Cosmic Rays
- Pub Date:
- 1991
- Bibcode:
- 1991aame.conf..447B