Precise Measurement of the Absolute Yield of Fluorescence Photons in Atmospheric Gases

Details Precise Measurement of the Absolute Yield of Fluorescence Photons in Atmospheric Gases Precise Measurement of the Absolute Yield of Fluorescence Photons in Atmospheric Gases

2011-01-19

arxiv.org/abs/1101.3799v1

Nucl.Phys.Proc.Suppl.212-213:356-361,2011

Astronomy and Astrophysics

Astrophysics

Instrumentation and Methods for Astrophysics

To appear in the Proceedings of CRIS 2010, Cosmic Ray International Seminar -- 100 years of Cosmic Ray Physics: from pioneerin

Scientific paper

10.1016/j.nuclphysbps.2011.03.04

We have performed a measurement of the absolute yield of fluorescence photons at the Fermilab Test Beam. A systematic uncertainty at 5% level was achieved by the use of Cherenkov radiation as a reference calibration light source. A cross-check was performed by an independent calibration using a laser light source. A significant improvement on the energy scale uncertainty of Ultra-High Energy Cosmic Rays is expected.

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