Abstract We report the observation results of the hard radiation flashes which accompanied the lightning discharges above the mountains of Northern Tien Shan. Time series of the counting rate intensity, numerical estimations of absolute flux, and energy distribution of accelerated electrons and of (20−2000) keV gamma rays were obtained at the height of 3700 m a. s. l., immediately within thunderclouds, and in closest vicinity (≲ 100 m) to discharge region. Two different kinds of radiation emission events are presented here: a relatively prolonged rise of gamma ray intensity with minute-scale duration (the thunderstorm ground enhancement, TGE) which has preceded a negative field variation, and a short sub-millisecond radiation burst, which accompanied a close lightning discharge in thundercloud. It was revealed also an indication to positron generation in thunderclouds at the time of gamma ray emission, as well as modulation of the neutron counting rate in Tien Shan neutron monitor which was operating at a (1.5–2) km order distance from the region of lightning development. ARTICLE INFO.

中文翻译：

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在天山雷暴中观测到的长时间伽马射线增强和短辐射爆发事件

摘要 我们报道了北天山山区伴随闪电放电的硬辐射闪光的观测结果。在 3700 m asl 高度处、紧接在雷云内和最近的附近 (≲) 获得了计数率强度的时间序列、绝对通量的数值估计以及加速电子和 (20-2000) keV 伽马射线的能量分布100 m) 到放电区域。这里介绍了两种不同类型的辐射发射事件：在负场变化之前的具有分钟尺度持续时间的伽马射线强度相对延长的上升（雷暴地面增强，TGE），以及短的亚毫秒辐射爆发，它伴随着雷云中近距离的闪电放电。还揭示了在伽马射线发射时雷云中正电子产生的迹象，以及天山中子监测器中中子计数率的调制，该监测器在距该区域（1.5-2）公里的阶距处运行。闪电发展。文章信息。