Relativistic cosmic heavy nuclei were detected in a chamber composed of a pile of solid track detector (CR-39) and the nuclear emulsion plates. The chambers were exposed by balloon flights at SANRIKU BALLOON CENTER. The integral flux of cosmic Fe-nuclei at the top of atmosphere is estimated to be I(≧4.1GeV/n)=(7.45±0.51)×10^<-2> per m^2・sr・sec. The multiplicity and angular distributions of secondary charged particles in Fe-nucleus collisions are presented.
重一次宇宙線の観測と原子核・原子核衝突の研究
SA0166635.pdf
(576.54KB)
