2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/48109The suppression of photon bremsstrahlung due to a variety of in-medium effects is discussed. Different electrodynamic suppression effects are discussed, and compared with the related color analogs. Higher order effects are considered, and found to be important. Data from SLAC E-146 is discussed, and compared with theory. The effect of finite thickness targets is emphasized, since nuclear size is such an important limiting factor for the chromodynamics effects.8 pages; presented at the Fourth Paris Workshop on Quantum Chromodynamics, June 1-6, Paris, FranceHigh Energy Physics - Phenomenologytext