Chemical abundances of cosmic rays greater than 4.5 GV measured with a large area proportional counter-scintillation counter stackA 6500 sq cm-ster cosmic-ray detector consisting of 12 gas counter trays sandwiched between two large-area circular scintillation counters was flown from Palestine, Texas in November 1972 to study the composition of primary particles greater than 1.5 GeV/nucleon in the charge range from 3 to 30. For each analyzed event, the particle trajectory was recorded, using four 20-wire proportional counter trays. Also recorded were the energy loss in each of the solid counters and the dE/dx losses in each of the 12 gas counters. The large dynamic range of the detector is established by operating six of the gas counters in the ionization mode. A description of the instrument and some preliminary results are given.
Document ID
19740047410
Acquisition Source
Legacy CDMS
Document Type
Conference Proceedings
Authors
Lheureux, J.
Fan, C. Y. (Arizona, University Tucson, Ariz., United States)
Mainardi, R. (Maryland, University College Park, Md., United States)