Estudo analitico da componente hadronica de superfamilias da radiação cosmica detectadas em camaras de emulsão nuclear

AUTOR(ES)

Cesar Gustavo Silveira da Costa

DATA DE PUBLICAÇÃO

1993

RESUMO

Solutions of the one-dimensional diffusion equation for the hadronic cascade induced by one single nucleon in the atmosphere are obtained, assuming constant nucleonic and pionic interaction mean-free-paths. By mean of these solutions, it is possible to describe analytically cosmic- ray events detected in emulsion chambers, having total visible hadronic energy around 1000 TeV (in the laboratory system). It is necessary to introduce violation of the Feynman Scaling law in the charged multiparticle production spectra, accordingly to accelerator data on rapidity distributions, and it must be imposed consistency between the nucleonic (and pionic) mean elasticity and the mean inelasticity. The analysis of hadronic energy spectrum for the superfamilies "P3 -C1-B90" and "C141G4836", detected by the Pamir Collaboration, and for the superfamilies "Ursa Maior" and "Mini-Andromeda III", detected in Mt. Chacaltaya by the Brazil-Japan Collaboration, shows that there is no need to introduce neither heavy primaries, nor unusual hadronization mechanisms, in order to explain quite well the emulsion chamber experimental data

ASSUNTO(S)

integrais de raios cosmicos fujnman pions

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