127 citations · 290 across the 4 of their papers we have counts for
4 papers
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…
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…
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…
Acceleration of Particles by Oblique Shocks and Cosmic Ray Spectra around the Knee Region
K. Kobayakawa, Y. S. Honda, T. Samura
We examine the first order Fermi acceleration on the presumption that supernova remnant shocks cross ambient magnetic fields with various angles. These oblique shocks accelerate pa…