The feedback mechanism of runaway air breakdown -: art. no. L09809

被引：49

作者：

Babich, LP

Donskoy, EN

Kutsyk, IM

Roussel-Dupré, RA

机构：

[1] Russian Fed Nucl Ctr, VNIIEF, Sarov 607180, Nizhegorodskaya, Russia

[2] Los Alamos Natl Lab, Los Alamos, NM 87545 USA

来源：

GEOPHYSICAL RESEARCH LETTERS | 2005年 / 32卷 / 09期

关键词：

D O I：

10.1029/2004GL021744

中图分类号：

P [天文学、地球科学];

学科分类号：

07 ;

摘要：

The feedback mechanism presented in the paper published by Dwyer ( 2003) is examined in the context of runaway breakdown and thunderstorm electrical conditions. A detailed comparison between previous kinetic and Monte Carlo simulations performed by the authors and others and those of Dwyer are presented. The role of positrons and bremsstrahlung photons in contributing to the runaway avalanche rate is discussed. An alternative and simplified treatment of the feedback mechanism is presented. Our preliminary results are in basic agreement with Dwyer and indicate that positron feedback is more important. In addition, we find that there is a temporal 'stepping' effect associated with the feedback process and that this effect could also lead to a spatial stepping reminiscent of stepped leaders.

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页码：1 / 5

页数：5

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