Astronomy and Astrophysics – Astrophysics
Scientific paper
2005-06-29
Astropart.Phys.25:129-139,2006
Astronomy and Astrophysics
Astrophysics
22 pages, 14 figures, 2 tables, submitted to Astroparticle Physics
Scientific paper
10.1016/j.astropartphys.2005.12.
In a test experiment at the Final Focus Test Beam of the Stanford Linear Accelerator Center, the fluorescence yield of 28.5 GeV electrons in air and nitrogen was measured. The measured photon yields between 300 and 400 nm at 1 atm and 29 deg C are Y(760 Torr, air) = 4.42 +/- 0.73 and Y(760 Torr, nitrogen) = 29.2 +/- 4.8 photons per electron per meter. Assuming that the fluorescence yield is proportional to the energy deposition of a charged particle traveling through air, good agreement with measurements at lower particle energies is observed.
Collaboration
from Showers The Fuorescence in Air
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