论文标题
在Tien Shan的雷暴中观察到的延长伽玛射线增强和短辐射爆发事件
The prolonged gamma ray enhancement and the short radiation burst events observed in thunderstorms at Tien Shan
论文作者
论文摘要
我们报告了伴随着北田山山上的闪电排放的硬辐射闪光的观察结果。计数速率强度的时间序列，绝对通量的数值估计以及加速电子的能量分布以及（20-2000）kev伽马射线的时间序列在3700m a.s.l.的高度，紧接在雷克洛德（Thunderclouds）的高度上，最接近的地区（<$ <$ <$ 100m）。这里介绍了两种不同类型的辐射发射事件：伽马射强度的持续时间相对较长，持续时间（雷暴地面增强，TGE，TGE），这是在负面的磁场变化之前的，而短的下毫秒辐射爆发，伴随着雷鸣般的闪电放电。这也揭示了在伽马射线排放时在雷云中产生正电子的迹象，以及对距雷电开发区域（1.5-2）km订单距离运行的Tien〜shan Neutron Monitor中中子计数速率的调节。
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 3700m a.s.l., immediately within thunderclouds, and in closest vicinity ($<$100m) 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.
