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Full-Text Articles in Physics
A Pot Of Gold At The End Of The Cosmic "Raynbow"?, L. A. Anchordoqui, M. T. Dova, T. P. Mccauley, T. Paul, S. Reucroft, J. D. Swain
A Pot Of Gold At The End Of The Cosmic "Raynbow"?, L. A. Anchordoqui, M. T. Dova, T. P. Mccauley, T. Paul, S. Reucroft, J. D. Swain
Thomas Paul
We critically review the common belief that ultrahigh energy cosmic rays are protons or atomic nuclei with masses not exceeding that of iron. We find that heavier nuclei are indeed possible, and discuss possible sources and acceleration mechanisms for such primaries. We also show detailed simulations of extensive air showers produced by "superheavy" nuclei, and discuss prospects for their detection in future experiments.
Air Shower Simulation Using Geant4 And Commodity Parallel Computing, L. A. Anchordoqui, G. Cooperman, V. Grinberg, T. P. Mccauley, T. Paul, S. Reucroft, J. D. Swain, G. Alverson
Air Shower Simulation Using Geant4 And Commodity Parallel Computing, L. A. Anchordoqui, G. Cooperman, V. Grinberg, T. P. Mccauley, T. Paul, S. Reucroft, J. D. Swain, G. Alverson
Thomas Paul
We present an evaluation of a simulated cosmic ray shower, based on GEANT4 and TOP-C, which tracks all the particles in the shower. TOP-C (Task Oriented Parallel C) provides a framework for parallel algorithm development which makes tractable the problem of following each particle. This method is compared with a simulation program which employs the Hillas thinning algorithm.