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astro-ph2004
New measurement on photon yields from air and the application to the energy estimation of primary cosmic rays
M. Nagano, K. Kobayakawa, N. Sakaki +1
The air fluorescence technique is used to detect ultra-high energy cosmic rays (UHECR), and to estimate their energy. Of fundamental importance is the photon yield due to excitatio…
astro-ph2003
Photon yields from nitrogen gas and dry air excited by electrons
M. Nagano, K. Kobayakawa, N. Sakaki +1
In order to detect ultrahigh-energy cosmic rays (UHECR), atmospheric fluorescence light from the trajectory of the extensive air shower may be measured by mirror-photosensor system…