Publication: The impact of the air-fluorescence yield on the reconstructed shower parameters of ultra-high energy cosmic rays.
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2011-01
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Elsevier Science BV
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Abstract
An accurate knowledge of the fluorescence yield and its dependence on atmospheric properties such as pressure, temperature or humidity is essential to obtain a reliable measurement of the primary energy of cosmic rays in experiments using the fluorescence technique. In this work, several sets of fluorescence yield data (i.e. absolute value and quenching parameters) are described and compared. A simple procedure to study the effect of the assumed fluorescence yield on the reconstructed shower parameters (energy and shower maximum depth) as a function of the primary features has been developed. As an application, the effect of water vapor and temperature dependence of the collisional cross section on the fluorescence yield and its impact on the reconstruction of primary energy and shower maximum depth has been studied. Published by Elsevier B.V.
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© 2011 Elsevier Science BV .
This work has been supported by the Spanish Ministerio de Ciencia e Innovacion (FPA2009-07772 and CONSOLIDER CPAN CSD2007-42) and "Comunidad de Madrid" (Ref.: 910600). Monasor acknowledges the "Consejeria de Educacion y Ciencia de Castilla-La Mancha" and the "Fondo Social Europeo" for a postdoctoral fellowship. Very fruitful discussion with our colleagues of the Auger collaboration are acknowledged, in particular with B. Keilhauer, J. Matthews, V.H. Ponce and M. Unger.
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