Physics – Nuclear Physics
Scientific paper
Nov 1992
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992nuphs..28...90c&link_type=abstract
Nuclear Physics B Proceedings Supplements, Volume 28, Issue 2, p. 90-94.
Physics
Nuclear Physics
2
Scientific paper
The L.P.M. effect has to be taken into account in UHE-γ-ray Astronomy above 1018 eV; at 1020 eV a γ-induced shower has only twice the electron size of a γ-shower with 10 times lower energy. This reduces considerably the intensity ``observed'' near 1020 eV.
The e.m. component in proton induced Giant Air Showers (GAS) will be reduced according to our preliminary approach by a non Monte Carlo simulation) by 24% at 1020 eV at sea level; this implies up to those energies that spectrum measurements have to be corrected, but that the classical detection of the e.m. component is still possible.
In the same time, the detection of the muon component is also considered. A realistic situation with a giant array ditributed over 104 Km2 at sea level is analysed: the equilateral triangle of the pine forest ``Landes de Gascogne'' (sides of 150 Km, Hossegor-Nerac-Carcans, centered in the south of Bordeaux).
Attallah R.
Capdevielle Jean-Noel
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