Penetrative nature of high energy showers observed in Chacaltaya emulsion chamber

Details Penetrative nature of high energy showers observed in Chacaltaya emulsion chamber Penetrative nature of high energy showers observed in Chacaltaya emulsion chamber

Sep 1986

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986jpsj...55.2977f&link_type=abstract

Physical Society of Japan, Journal (ISSN 0031-9015), vol. 55, Sept. 1986, p. 2977-2995.

Physics

3

Cosmic Ray Showers, Gamma Rays, Hadrons, High Energy Interactions, Energy Spectra, Nuclear Emulsions, Nuclear Interactions, Radiation Detectors

Scientific paper

In the present study of shower development in an emulsion chamber for families of high energy showers, about 1/4 to 1/3 of the penetrating showers with E(gamma) of more than 10 TeV were found to be exotic ones that penetrate down into the lower detector and exhibit self-rejuvenation. In comparison with their simulation, they show stronger penetration than a pure cascade shower, implying possession of a novel gamma-ray source. Microscopic observation in the lower detector confirms young shower cores from such sources. It is suggested that the present phenomena are initiated by a narrow beam involving a hadron in close association with a gamma-ray or an electron.

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