High-energy radiation and atmospheric electric field that are observed at Mt. Fuji

Shogen SAITO; Tomomi SHOJI; Masashi KAMOGAWA; Tatsuo TORII

Presentation information

International Session (Oral)

Symbol P (Space and Planetary Sciences) » P-EM Solar-Terrestrial Sciences, Space Electromagnetism & Space Environment

[P-EM07_30PM1] Lightning and TLEs and their effects on the lower and middle atmosphere

Wed. Apr 30, 2014 2:15 PM - 4:00 PM 213 (2F)

Convener:*Mitsuteru Sato(Department of Cosmoscience, Hokkaido University), Toru Adachi(Waseda Institute for Advanced Study, Waseda University), Tomoo Ushio(Information and communication engineering department, Osaka University), Yukihiro Takahashi(Department of Cosmosciences, Graduate School of Science, Hokkaido University), Chair:Tomoo Ushio(Information and communication engineering department, Osaka University), Toru Adachi(Waseda Institute for Advanced Study, Waseda University)

3:45 PM - 4:00 PM

[PEM07-07] High-energy radiation and atmospheric electric field that are observed at Mt. Fuji

*Shogen SAITO¹, Tomomi SHOJI¹, Masashi KAMOGAWA¹, Tatsuo TORII² (1.Dpt. of Phys., Tokyo Gakugei Univ., 2.Japan Atomic Energy Agency)

Keywords:Thunderstorm, Gamma ray, Mt. Fuji

Energetic radiation caused by the lightning activity is expected to be due to "Relativistic Runaway Electron Avalanche (RREA)". In RREA process, high-energy cosmic-ray collision with the atmospheric molecules produces secondary products. Because of pair annihilation and bremsstrahlung in the electric field inside the thunderstorm, gamma-ray is emitted. In this study, we would like to verify the RREA process by using the observed data of the atmospheric electric field and gamma rays measured at Mt. Fuji.