Long lasting low energy thunderstorm ground enhancements and possible Rn-222 daughter isotopes contamination
Long lasting low energy thunderstorm ground enhancements and possible Rn-222 daughter isotopes contamination
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持久的低能量雷暴地面增强和可能的 Rn-222 子体同位素污染
DOI：
10.1103/physrevd.98.022007
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发表时间：
2018
影响因子：
5
通讯作者：
A. Chilingarian
中科院分区：
文献类型：
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作者：
A. Chilingarian
雷暴地面增强（TGE）包括来自云层的大粒子通量，通常与雷暴相一致。在过去十年中，在亚美尼亚Aragats研究站观测到的大多数TGE都来自于在研究站上方的雷暴云中运行的“电子加速器束”。观察到的TGE包含高能电子和伽马射线（以及中子），通常持续几分钟。从2014年开始，我们使用粒子探测器来记录来自雷暴云的低能量粒子（从0.3 MeV开始）。在2016年，我们已经注意到，由具有低能量阈值的粒子探测器测量的TGE显示出更长的持续时间。高能粒子（能量高达40 MeV）的通量持续1-10分钟;最低的（小于3 MeV）-超过两个小时。所有的强TGE都包含一个高能峰和一个持续2-3小时的低能延长。在本文中，我们描述了持久的TGEs的例子，并讨论了增强粒子通量与电场扰动和降水的相关性。
Thunderstorm ground enhancements (TGEs) comprise large particle fluxes coming from the clouds that usually coincide with thunderstorms. Most of TGEs observed at the Aragats research station in Armenia during the last ten years originated from “beams of the electron accelerator” operating in the thunderclouds above the research station. Observed TGEs contain high-energy electrons and gamma rays (as well as neutrons) and usually last a few minutes. Starting from 2014, we use particle detectors tuned for the registration of lower energies particles coming from thunderclouds (starting from 0.3 MeV). In 2016, we already noticed that TGEs measured by particle detectors with a low energy threshold demonstrated a drastically larger duration. The flux of the high-energy particles (with energies up to 40 MeV) lasts 1–10 min; the lowest ones (less than 3 MeV)—more than two hours. All intense TGEs contain a highenergy peak and a prolonged low-energy extension lasting 2–3 h. In the presented paper, we describe examples of long-lasting TGEs and discuss correlations of enhanced particle fluxes with disturbances of the electric field and with precipitation.