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On the absolute value of the air-fluorescence yield

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Rosado Vélez, Jaime and Blanco Ramos, Francisco and Arqueros Martínez, Fernando (2014) On the absolute value of the air-fluorescence yield. Astroparticle physics, 55 . pp. 51-62. ISSN 0927-6505

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Official URL: http://dx.doi.org/10.1016/j.astropartphys.2014.02.003




Abstract

The absolute value of the air-fluorescence yield is a key parameter for the energy reconstruction of extensive air showers registered by fluorescence telescopes. In previous publications, we reported a detailed Monte Carlo simulation of the air-fluorescence generation that allowed the theoretical evaluation of this parameter. This simulation has been upgraded in the present work. As a result, we determined an updated absolute value of the fluorescence yield of 7.9 +/- 2.0 ph/MeV for the band at 337 nm in dry air at 800 hPa and 293 K, in agreement with experimental values. We have also performed a critical analysis of available absolute measurements of the fluorescence yield with the assistance of our simulation. Corrections have been applied to some measurements to account for a bias in the evaluation of the energy deposition. Possible effects of other experimental aspects have also been discussed. From this analysis, we determined an average fluorescence yield of 7.04 +/- 0.24 ph/MeV at the above conditions. (C) 2014 Elsevier B.V. All rights reserved.


Item Type:Article
Additional Information:

© Elsevier Science BV 2014.
This work was supported by MINECO (FPA2009-07772, FPA2012-39489-C04-02) and CONSOLIDER CPAN CSD2007-42. We thank our colleagues of the Auger Collaboration for fruitful discussions and comments on this work.

Uncontrolled Keywords:Electron-impact; Cross-sections; Secondary electrons; Cosmic-rays; Nitrogen; Pressure; Detector; State; Beam; NM
Subjects:Sciences > Physics > Nuclear physics
ID Code:32467
Deposited On:29 Jul 2015 07:50
Last Modified:10 Dec 2018 14:58

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