Particle-in-cell simulation of generation of an HF sequence of short current pulses in the vircator with counter-propagating beams

被引：12

作者：

Dubinov, A. E. ^{[1
,2
,3
]}

Saikov, S. K. ^{[1
]}

Tarakanov, V. P. ^{[2
,4
]}

机构：

[1] All Russian Res Inst Expt Phys, Russian Fed Nucl Center, Pr Mira 37, Sarov 607188, Nizhny Novgorod, Russia

[2] Natl Res Nucl Univ MEPhI Moscow Engn Phys Inst, Kashirskoe Sh 31, Moscow 115409, Russia

[3] Natl Res Nucl Univ MEPhI, Sarov State Phys & Tech Inst, Ul Dukhova 6, Sarov 607186, Nizhny Novgorod, Russia

[4] Russian Acad Sci, Joint Inst High Temp, Ul Izhorskaya 13-2, Moscow 125412, Russia

来源：

PHYSICS OF WAVE PHENOMENA | 2017年 / 25卷 / 03期

关键词：

NONNEUTRAL PLASMA DIODES; STRING ION-SOURCE; VIRTUAL CATHODE; NONLINEAR DYNAMICS; ELECTRON CLOUD;

D O I：

10.3103/S1541308X17030128

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We performed a particle-in-cell (PIC) simulation of a vircator with counter electron beams in a cylindrical cavity with metal walls. Two pairs of counter-propagating superlimiting electron beams with different energy and current in each pair are injected along the cylinder axis. It is found that the electron charge in the cavity is formed as a sequence of pulses corresponding to slow accumulation and fast discharge. It is shown that the pulses are related to the characteristic dynamics of the squeezed beam state, the distributed virtual cathode. This regime can be used to generate anHF sequence of ultrawideband electromagnetic pulses.

引用

页码：238 / 241

页数：4

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