Mechanism of Generation of Runaway Electrons in a Lightning Leader

被引：26

作者：

Babich, L. P. ^{[1
]}

Bochkov, E. I. ^{[1
]}

Kutsyk, I. M. ^{[1
]}

机构：

[1] Russian Fed Nucl Ctr VNIIEF, Sarov 607188, Nizhni Novgorod, Russia

来源：

JETP LETTERS | 2014年 / 99卷 / 07期

关键词：

LABORATORY EXPERIMENT; HIGH OVERVOLTAGES; GAS-DISCHARGES; X-RAYS; AIR; AVALANCHE; BREAKDOWN; FIELD;

D O I：

10.1134/S0021364014070029

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

A mechanism is analyzed of the electric field enhancement in a lightning leader up to the level permitting run-away of low-energy electrons. The ionization wave propagation in the preionized domain in front of the leader makes it possible to overcome the limitation imposed on the field intensity by transversal expansion of the leader front. By means of numerical simulations, it is demonstrated that, at the final stage of formation of a new leader step, generation of an electric field is possible in the channels of the streamer zone ahead of the new step with intensity sufficient for electron runaway and, consequently, for producing the X-ray and gamma-ray pulses observed in correlation with the lightning leader steps.

引用

页码：386 / 390

页数：5

共 38 条

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