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FIZIKA B 4 (1995) 2, 137-144
 
ESTIMATION OF CHARGE OF HEAVY COSMIC-RAY PARTICLES USING THE d-RAY COUNTING METHOD IN FUJI ET-7B NUCLEAR EMULSION
BASUDHARA BASU, RENA MAJUMDAR, PRATIBHA PAL, DEBA PRASAD BHATTACHARYYA
and MASAMI FUJII*
Department of Theoretical Physics, Indian Association for the Cultivation of Science,
Jadavpur, Calcutta 700032, India,
*Faculty of Engineering, Aomori University, Aomori 030, Japan
Received 24 October 1994
Revised manuscript received 5 April 1995
The range distribution of d-rays produced by heavy nuclei of
energy � 5 GeV/n in Fuji ET-7B nuclear emulsion has been
investigated using data from an exposure to primary cosmic rays in a balloon-borne
plastic-emulsion chamber. The estimated d-ray densities per 100
mm for projectiles of charges Z = 14, 20 and 26 are in accord
with the low-range simulation results of Ichimura et al.
UDC 539.12
PACS 96.40-z
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