Air Fluorescence Measurements in the Spectral Range 300-420 nm using a 28.5 GeV Electron Beam
/ Authors
R. Abbasi, T. Abu-Zayyad, K. Belov, J. Belz, Z. Cao, M. Dalton, Y. Fedorova, P. Huentemeyer, B. Jones, C. Jui
and 28 more authors
E. Loh, N. Manago, K. Martens, J. Matthews, M. Maestas, D. Rodríguez, J. Smith, P. Sokolsky, R. Springer, J. Thomas, S. Thomas, Pisin Chen, C. Field, C. Hast, R. Iverson, Johnny S. T. Ng, A. Odian, K. Reil, Dieter Walz, D. Bergman, G. Thomson, A. Zech, F. Chang, C. Chen, C. Chen, M. A. Huang, W. Hwang, Guey-lin Lin
/ Abstract
Abstract Measurements are reported of the yield and spectrum of fluorescence, excited by a 28.5 GeV electron beam, in air at a range of pressures of interest to ultra-high energy cosmic ray detectors. The wavelength range was 300–420 nm. System calibration has been performed using Rayleigh scattering of a nitrogen laser beam. In atmospheric pressure dry air at 304 K the total yield is 20.8 ± 1.6 photons per MeV.
Journal: Astroparticle Physics