Computer Science
Scientific paper
Aug 1985
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985icrc....2..230d&link_type=abstract
In NASA. Goddard Space Flight Center 19th Intern. Cosmic Ray Conf., Vol. 2 p 230-233 (SEE N85-34006 22-93)
Computer Science
Cerenkov Counters, Cosmic Ray Showers, Energy Spectra, Flux Density, Primary Cosmic Rays, Radiation Measuring Instruments, Elementary Particles, Fluorescence, Heavy Nuclei, High Energy Interactions, Light Emission, Protons
Scientific paper
Information can be obtained about the nature of a primary cosmic ray by looking at the way in which an extensive air shower (EAS) develops in the atmosphere. Heavy nuclei give rise to showers that develop high in the atmosphere and the depth of maximum development is subjected to much smaller fluctuations than is the case for showers originating from protons. This development is followed by optical methods based on the observations of Cerenkov light or fluorescence light. The Cerenkov observations have two complementary techniques: measurement of the time profile of the Cerenkov pulse with resolution of a few nanoseconds and measurement of the lateral distribution of the Cerenkov light. In each case the measured quantities must be related to some characteristic development parameters.
Clay Roger William
Dawson Bruce R.
Prescott J. R.
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