arxiv: 1101.3799 · v1 · pith:ZBRVS4FInew · submitted 2011-01-19 · 🌌 astro-ph.IM · astro-ph.HE

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

AIRFLY Collaboration: M. Ave , M. Boh\'a\v{c}ov\'a , K. Daumiller , P. Di Carlo , C. Di Giulio , P. Facal San Luis , D. Gonzales , C. Hojvat

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J. R. H\"orandel M. Hrabovsk\'y M. Iarlori B. Keilhauer H. Klages M. Kleifges F. Kuehn M. Monasor L. No\v{z}ka M. Palatka S. Petrera P. Privitera J. Ridky V. Rizi B. Rouill\'e d'Orfeuil F. Salamida P. Schov\'anek R. \v{S}mida H. Spinka A. Ulrich V. Verzi C. Williams

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keywords absolutecalibrationenergyfluorescencelightmeasurementperformedphotons

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

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