Energy spectra of high energy cosmic ray nuclei and interaction studies from JACEE experiments are described with a particular emphasis on the energy region close to the ‘‘Knee’’ (100–1000 TeV/nucleus) and high density nucleus–nucleus interactions. Heavy ion studies with a magnetic emulsion chamber with accelerator beams (EMU05 experiments) are also discussed to illustrate some outstanding issues on high and low PT phenomena and on isospin symmetries.

Topics
Cosmic rays, Emulsions, Isospin
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© 1993 American Institute of Physics.
1993
American Institute of Physics
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