3 papers
astro-ph2005
Fluorescence in damp air and comments on the radiative life time
N. Sakaki, K. Kobayakawa, M. Nagano +1
Photon yields in damp air excited by an electron using a Sr90 source are compared withthose in dry air. Water vapors considerably reduce the yields, however, a further study is…
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…