Experimental investigation of an S-band long-pulse relativistic backward-wave oscillator

被引：1

作者：

Jin Z. ^{[1
]}

Zhang J. ^{[1
]}

Yang J. ^{[1
]}

Zhong H. ^{[1
]}

Qian B. ^{[1
]}

Shu T. ^{[1
]}

Zhang J. ^{[1
]}

Zhou S. ^{[1
]}

Xu L. ^{[1
]}

机构：

[1] College of Opto-Electronic Science and Engineering, National University of Defense Technology

来源：

Qiangjiguang Yu Lizishu/High Power Laser and Particle Beams | 2010年 / 22卷 / 11期

关键词：

Breakdown; Long pulse; Relativistic backward-wave oscillator; Repetition operation; RF field;

D O I：

10.3788/HPLPB20102211.2648

中图分类号：

学科分类号：

摘要：

The main reasons of causing pulse-shortening in high power microwave devices are qualitatively analyzed. Some important rules for designing a long-pulse relativistic backward-wave oscillator(RBWO) are given. According to the above rules and the basic theory of resonant RBWO, an S-band long-pulse RBWO is designed and investigated both numerically and experimentally. Experimental results show that a 2 GW microwave with pulse duration of 90 ns at single shot mode and 1 GW microwaves with pulse duration of 100 ns at 10 Hz repetition rate mode are obtained. The microwave frequency is 3.6 GHz with dominant mode of TM01, and power conversion efficiency is about 20%. The explosive electron emission in intense RF field between the cut-off neck and the first slow-wave structure (SWS) is one of the main causes leading to the earlier unexpected termination of microwave output.

引用

页码：2648 / 2652

页数：4

共 14 条

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