201 citations · 396 across the 5 of their papers we have counts for
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astro-ph.HE2009★ 9 cited
Sensitivity of Extensive Air Showers to Features of Hadronic Interactions at Ultra-High Energies
Ralf Ulrich, Ralph Engel, Steffen Müller +3
We study the dependence of extensive air shower development on the first hadronic interactions at ultra-high energies occurring in the startup phase of the air shower cascade. The…
astro-ph.HE2009★ 34 cited
On the measurement of the proton-air cross section using air shower data
Ralf Ulrich, Johannes Blümer, Ralph Engel +2
The analysis of high-energy air shower data allows one to study the proton-air cross section at energies beyond the reach of fixed target and collider experiments. The mean depth o…