Observation of the gradual increases and bursts of energetic radiation in association with winter thunderstorm activity
Observation of the gradual increases and bursts of energetic radiation in association with winter thunderstorm activity
复制标题
与冬季雷暴活动相关的高能辐射逐渐增加和爆发的观察
DOI：
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发表时间：
2008
期刊：
影响因子：
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通讯作者：
Uraki
中科院分区：
文献类型：
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作者：
Atsuo;Orii;akeshi;Ugita;asushi;Uraki
γ射线的剂量率随雷暴活动的增加而增加。它们是在日本的冬季在地面上观察到的。为了研究冬季雷暴期间辐射的时间分布，我们研制了四套由长正比计数管组成的辐射探测器。这些探测器通过安装不同的厚屏蔽罩，对入射粒子能量的响应特性不同。并与在某核电厂周围设置的环境辐射监测仪同时测量的结果进行了比较。还通过使用场磨机测量电场。结果表明，在冬季雷暴活动中，辐射增强有两种类型：能量在几MeV的光子强度渐变型和能量在10 MeV以上的高能光子注入引起的爆发型。
The dose rate of the gamma-rays increases in association wit h the activities of the thunderstorm. They were observed on the ground in the winter season o f Japan. To investigate the time profile of the radiations during the winter thunderstorms, four sets o f the radiation detectors were prepared which consist of the long proportional counters. These detectors have different characteristics of the response for the energy of the incident particles by mounting different t hick shielding covers. Those results were compared with the results measured at the same time by the enviro nmental radiation monitors set up around a nuclear power facility. Electric field was also measured by using a field mill. As a result, the following two types of the radiation enhancements have been found duri ng the winter thunderstorm activities; the gradual variation of photon intensity with energy of a few Me V, and the burst type of the radiation that is attributed to the injection of high energy photons with the e n rgy over 10 MeV.