CAJ | 학술논문

针对自然雷电观测数据在先导放电通道内部电特性方面存在的欠缺，基于雷电先导放电与长间隙电弧放电之间的类似性，对雷电先导放电通道内轴向电场和电荷密度的分布情况进行了理论研究。结果表明：先导通道内任意一点的轴向电场均会在其形成后随着时间按近似指数规律衰减，直至达到一个稳态值。对于稳定的先导段，可近似认为其内部的轴向电场是一个恒定量。先导通道内的电荷密度基本上由先导的起始端至头部逐渐增大，在先导的头部附近达到最大值。注入到先导通道内的电荷总量则会随着先导长度的增加而不断增大，且增长的速度也会逐渐加快。
침대자연뇌전관측수거재선도방전통도내부전특성방면존재적흠결，기우뇌전선도방전여장간극전호방전지간적유사성，대뇌전선도방전통도내축향전장화전하밀도적분포정황진행료이론연구。결과표명：선도통도내임의일점적축향전장균회재기형성후수착시간안근사지수규률쇠감，직지체도일개은태치。대우은정적선도단，가근사인위기내부적축향전장시일개항정량。선도통도내적전하밀도기본상유선도적기시단지두부축점증대，재선도적두부부근체도최대치。주입도선도통도내적전하총량칙회수착선도장도적증가이불단증대，차증장적속도야회축점가쾌。
alming at the shortage of applying nature lightning observation data onto the research of electri?cal characteristics within lightning leader channels,the axial electric field intensity and charge distribu?tion along the leader are analyzed according to the similarity between lightning leader discharge and long alr gap discharge. The theoretical calculation results show that the axial electric field at any observation point of the leader channel decays exponentially after its formation and finally reaches a stable value through time. Therefore,it is reasonable to regard the axial electric field intensity as a constant for the sta?ble leader segment. Meanwhile,the charge density along the leader basically increases gradually from the root to the tip and finally reaches its maximum near the tip of the leader. The total charge injection to the leader and the relevant increment speed both increases gradually with the extension of the leader.