摘要
用无狭缝摄谱仪获得了山东省一次云对地闪电回击过程的光谱,根据光谱信息,计算了闪电通道等离子体温度和电子密度,并分析了闪电通道内部的辐射机制,讨论了闪电通道等离子体中的箍缩效应。由此推断:闪电通道等离子体中的箍缩效应是闪电产生X射线的主要辐射源。最后讨论了闪电通道与激光在大气中激发的等离子体通道的差异。
Spectra of lightning return strokes had been obtained by Slit less spectrograph in Shandong. Channel temperature and electron density are calculated according to the information of lightning - spectra. The radiation mechanism of lighting channel is analyzed. Pinch effect of lightning channel plasma is discussed, and from this pinch spot is deduced as the main radiant point of X-ray in the process of light ing. The differences between lightning channel and plasma channel produced by laser in the atmosphere is discussed.
出处
《高原气象》
CSCD
北大核心
2008年第1期143-147,共5页
Plateau Meteorology
基金
国家自然科学基金项目(40475007)资助
关键词
箍缩效应
通道温度
电子密度
Pinch effect
Channel temperature
Electron density
