منابع مشابه
Narrow Cosmic-Ray Showers
It has been found that the cosmic-ray particles which occur in showers of small angular divergence are much more penetrating than those of the usual type of shower. The particles in such "hard showers" are clearly not electrons and are interpreted as medium and low energy mesotrons. The second maximum of the Rossi curve, which is accentuated for small-angle shower arrangements, can be accounted...
متن کاملRadio Pulses from Cosmic Ray Air Showers
The first experiment in which radio emission was detected from high energy particles is described. An array of dipoles was operated by a team of British and Irish physicists in 1964-5 at the Jodrell Bank Radio Observatory in conjunction with a simple air shower trigger. The array operated at 44 MHz with 2.75 MHz bandwidth. Out of 4,500 triggers a clear bandwidth-limited radio pulse was seen in ...
متن کاملHadronic Interactions for High Energy Cosmic Ray Air Showers
Understanding hadronic interactions at high energies represents a very important ingredient for modeling high energy cosmic ray air showers. In this paper, we present a new approach to simulate hadronic interactions, including hadron-hadron, hadron-nucleus, and nucleus-nucleus scattering, in the energy range roughly between 10 11 and 10 17 eV. Such collisions are very complex, being composed of...
متن کاملThe QCD Black Disk Limit in Cosmic Ray Air Showers
We discuss particle production in the high energy limit of QCD. Due to a large gluon density, the interaction reaches the black disk limit and the projectile is resolved into its partonic structure at the saturation scale. This leads to suppression of forward particle production and hereby to a faster absorption of cosmic ray air showers. This property is most suitable for the distinction of ev...
متن کاملThe effect of atmospheric attenuation on inclined cosmic ray air showers
The increasing cosmic ray statistics collected by present experiments and the future prospects with new large arrays demand accurate calculations of the extensive air shower parameters (EAS). The energy of the primary particle is estimated by ground arrays fitting a lateral distribution function (LDF) to the particle densities at a given observing level. However, the lack of appropriate paramet...
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ژورنال
عنوان ژورنال: Physical Review
سال: 1938
ISSN: 0031-899X
DOI: 10.1103/physrev.53.111