Observation of Thunderstorm Ground Enhancements with intense fluxes of high-energy electrons |
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| Institution: | 1. Renewable Energies Chair, University of Évora, IIFA, Palácio do Vimioso, Largo Marquês de Marialva, 7002-554, Évora, Portugal;2. Atmospheric Chemistry Research Group, School of Chemistry, University of Bristol, Cantock''s Close, Bristol, BS8 1TS, UK;1. Institute of Plasma Physics, Chinese Academy of Sciences, Shushanhu Road 350, Hefei 230031, Anhui, China;2. University of Science and Technology of China, Jinzhai Road 96, Hefei 230026, Anhui, China;1. School of Nuclear Science and Technology, University of Science and Technology of China, Hefei 230029, China;2. Institute of Plasma Physics, Chinese Academy of Sciences, Hefei 230031, China;1. Centro Brasileiro de Pesquisas Físicas — CBPF, Brazil;2. National Institute of Science and Technology for Complex Systems, Rio de Janeiro, Brazil |
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| Abstract: | The high altitude (～3200 m above sea level) of Aragats Space Environmental Center (ASEC) and low elevation of the thunderclouds provides a good opportunity to detect Thunderstorm Ground Enhancements (TGEs), particles of which rapidly attenuate in the atmosphere. In 2012, we have estimated the energy spectra of several TGEs and revealed significant electron fluxes extended till 30–40 MeV. Measured in the one and the same event gamma ray and electron fluxes allow to estimate the height of the thundercloud above the detector. Proceeding from the energy spectra and the height of the cloud we estimate the electron spectra on the exit from the electric field of the thundercloud, the number of excess electrons in the cloud and avalanche multiplication rate. |
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| Keywords: | Secondary cosmic rays Atmospheric electricity Particle detectors |
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