Comparison of Air Fluorescence and Ionization Measurements of E.M. Shower Depth Profiles: Test of a UHECR Detector Technique
Author(s) -
J. W. Belz,
Zhongyan Cao,
Petra Huentemeyer,
C.C.H. Jui,
K. Martens,
J. Matthews,
M. M. Maestas,
J. D. Smith,
P. Sokolsky,
R. W. Springer,
J. Thomas,
S. B. Thomas,
Pisin Chen,
C. Field,
C. Hast,
R. Iverson,
J.S.T. Ng,
A. Odian,
K. Reil,
Heinz Vincke,
D. Walz
Publication year - 2005
Publication title -
osti oai (u.s. department of energy office of scientific and technical information)
Language(s) - English
Resource type - Reports
DOI - 10.2172/878086
Subject(s) - air shower , cosmic ray , ionization , physics , detector , electron , fluorescence , bunches , atomic physics , nuclear physics , optics , ion , quantum mechanics
Measurements are reported on the fluorescence of air as a function of depth in electromagnetic showers initiated by bunches of 28.5 GeV electrons. The light yield is compared with the expected and observed depth profiles of ionization in the showers. It validates the use of atmospheric fluorescence profiles in measuring ultra high energy cosmic rays
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