Physics
Scientific paper
Jun 1984
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984jpsj...53.1983y&link_type=abstract
Physical Society of Japan, Journal (ISSN 0031-9015), vol. 53, June 1984, p. 1983-1994.
Physics
6
Cosmic Ray Showers, Electron Distribution, Hadrons, High Energy Interactions, Upper Atmosphere, Calorimeters, Integral Equations, Monte Carlo Method, Particle Mass, Particle Precipitation, Relativistic Particles
Scientific paper
An experiment to observe accompanied showers delayed relative to the bulk of extensive-air-shower particles near the core was carried out by using plural detectors set at separate places. Four delayed events hitting two or more detectors at the same time were observed. It is difficult to explain these events by accidental coincidence or conventional processes. However, these events can be explained, provided that a parent particle producing the delayed shower has a lifetime of the order of 1 x 10 to the -6th s and is heavier than a nucleon. The thickness of the air shower disk was also measured at core distances less than 50 m.
Maeda Toshihisa
Toyoda Yoshikazu
Yoshida Makiko
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