Short-Time Increases in the Gamma Ray Intensity and Electron Flux inside Thunderclouds As Studied at the High-Altitude Detector Point of the Tien-Shan Mountain Station
Shepetov A.L. Argynova K.A. Vildanova L.I. Idrisova T.K. Iskakov B.M. Zhukov V.V. Mamina S.A. Saduyev N.O. Sadykov T.K. Ryabov V.A.
April 2023Pleiades Publishing
Bulletin of the Lebedev Physics Institute
2023#50Issue 4123 - 127 pp.
Abstract: The events of short-time intensity increases in hard radiation in thunderclouds (thunderstorm ground enhancements, TGE) were studied at the Tien Shan mountain station (TSMS) of the Lebedev Physical Institute (LPI). Measurements of (30–3000) keV gamma rays and electrons accelerated to a few MeV are performed during close thundercloud passages using gamma and charged particle detectors placed at a height of 3750 m a.s.l. at the high altitude detector point of the station. The energy spectra of gamma rays associated with electric processes in the atmosphere are measured at the maxima of TGE events immediately in the spatial region of radiation generation inside thunderclouds. In some cases, a peak near ~500 keV is observed in the differential energy spectra of gamma rays, which can be interpreted as an annihilation line of the positrons generated in cascade processes of particles acceleration in thundercloud.
acceleration of electrons in thundercloud , atmospheric electricity , energy spectrum of gamma radiation , positron annihilation line
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Lebedev Physical Institute, Russian Academy of Sciences, Moscow, 119991, Russian Federation
Satbayev University, Institute of Physics and Technology, Almaty, 050032, Kazakhstan
Al-Farabi Kazakh National University, Institute of Experimental and Theoretical Physics, Almaty, 050040, Kazakhstan
Lebedev Physical Institute
Satbayev University
Al-Farabi Kazakh National University
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