Name : Naoya INOUE
Institute : Department of Physics, Saitama University
E-mail : ninoue@post.saitama-u.ac.jp
TITLE : Characteristics of Gamma Ray showers around 10**20eV
ABSTRACT :
Characteristics on shower development initiated by EHE gamma-ray is affected by LPM effect and geomagnetic cascading in the out of atmosphere. The difference of shower profiles between hadronic and gamma-ray primaries provides us the important key to solve the question of chemical composition at the highest energy. Presentation will be included following items studied from simulation and AGASA experimental results. (1) shower profiles of hadronic and gamma-ray primaries (2) detection possibility of gamma-ray primary with TA project (3) characteristics of muon component in hadronic and gamma-ray air showers (4) comparison of muon component between simulation and AGASA experimental results