The cascading of cosmic-ray nuclei in various media

Details The cascading of cosmic-ray nuclei in various media The cascading of cosmic-ray nuclei in various media

Dec 1975

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1975ap%26ss..38..419f&link_type=abstract

Astrophysics and Space Science, vol. 38, Dec. 1975, p. 419-436. Research supported by the Science Research Council of England;

Astronomy and Astrophysics

Astrophysics

22

Cosmic Ray Showers, Heavy Nuclei, Nuclear Scattering, Particle Collisions, Primary Cosmic Rays, Fragmentation, Helium, Iron, Nuclear Emulsions, Nucleons, Silicon

Scientific paper

More than a thousand interactions of primary heavy nuclei of the cosmic radiation with charge of at least 10 and energy greater than 1 GeV/nucleon in nuclear emulsion have been studied with emphasis on how the primary nucleus fragments. It has been determined that the observed cases of multiple successive fragmentations do not occur more frequently than expected. The fragmentation of nuclei with charge greater than 20 depends on the target nucleus to some extent, so it is important to try to separate the interactions in emulsion by their number of evaporation prongs. The fragmentation of O-16 at 2.1 GeV/nucleon shows a similar dependence on target nucleus. By using data from these interactions combined with published data, nuclear cascades in both emulsion and air have been simulated on a computer. Results on these cascades are given for both primary silicon and primary iron nuclei. These results are used to discuss the fluctuations expected in extensive air showers produced by heavy primary nuclei.

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