Proceedings International University Conference 'Electronics and Radiophysics of Ultra-High Frequencies' (Cat. No.99EX356)最新文献

Mechanism of microwave pulse shortening in the relativistic backward wave oscillator 相对论性倒波振荡器中微波脉冲缩短的机理

Proceedings International University Conference 'Electronics and Radiophysics of Ultra-High Frequencies' (Cat. No.99EX356) Pub Date : 1999-06-27 DOI: 10.1109/UHF.1999.787923

S. Korovin, G. Mesyats, I. Pegel, S. Polevin, V. Tarakanov

引用次数: 2

Frequency dependence of field enhancement factor for field emission cathodes with finite conductivity 有限电导率场发射阴极场增强因子的频率依赖性

Proceedings International University Conference 'Electronics and Radiophysics of Ultra-High Frequencies' (Cat. No.99EX356) Pub Date : 1999-05-24 DOI: 10.1109/UHF.1999.787948

A. Galdetskiy

引用次数: 0

Structure formation and control of electron beam dynamics in triode systems with virtual cathode 虚阴极三极管系统电子束动力学的结构形成与控制

Proceedings International University Conference 'Electronics and Radiophysics of Ultra-High Frequencies' (Cat. No.99EX356) Pub Date : 1999-05-24 DOI: 10.1109/UHF.1999.787906

V. Anfinogentov

{"title":"Structure formation and control of electron beam dynamics in triode systems with virtual cathode","authors":"V. Anfinogentov","doi":"10.1109/UHF.1999.787906","DOIUrl":"https://doi.org/10.1109/UHF.1999.787906","url":null,"abstract":"In recent years the researches of various sources of microwave radiation with supercritical currents are actively investigated. Operation of these devices is based on virtual cathode (VC) formation in the interaction space. VC is the oscillating area with space charge potential close to a potential of an electron source. Appearance of VC results in strong modulation of the arriving electron beam and excitation of high-power oscillations. The design simplicity, ultra high level of radiation power, possibility of frequency tuning with modification of electron beam parameters has attracted significant interest in recent years. In the present work we consider a triode-like vircator. In this system the electron beam injects from a cathode surface, further it passes an accelerating potential and after transmitting through an anode grid, it arrives in equipotential interaction space. One of remarkable features of VC devices is the complex irregular character of output radiation in similar devices. The great success of the nonlinear dynamic systems theory in the recent years is the discovery of a strong connection between dynamical chaos and structure formation. It is very interesting to clarify the connection between the formation of structures in electron beam with VC and its complex dynamics. The understanding of this connection allows us to control generation regimes at the expense of action on electronic structures.","PeriodicalId":348319,"journal":{"name":"Proceedings International University Conference 'Electronics and Radiophysics of Ultra-High Frequencies' (Cat. No.99EX356)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-05-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122693364","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

On the simple model of electron beam with overcritical current [in vircators] 过临界电流电子束的简单模型

Proceedings International University Conference 'Electronics and Radiophysics of Ultra-High Frequencies' (Cat. No.99EX356) Pub Date : 1999-05-24 DOI: 10.1109/UHF.1999.787917

A. Hramov, A. Koronovskii, V. Anfinogentov

引用次数: 0

Summation of the output powers for the low voltage 2.45 GHz klystrons 低压2.45 GHz速调管输出功率的总和

Proceedings International University Conference 'Electronics and Radiophysics of Ultra-High Frequencies' (Cat. No.99EX356) Pub Date : 1999-05-24 DOI: 10.1109/UHF.1999.787880

V.S. Medovikov

引用次数: 0

A diagnostic setup for measurement of time-resolved electron beam distributions in high-power O-type devices 用于测量高功率o型器件中时间分辨电子束分布的诊断装置

Proceedings International University Conference 'Electronics and Radiophysics of Ultra-High Frequencies' (Cat. No.99EX356) Pub Date : 1999-05-24 DOI: 10.1109/UHF.1999.787925

A. Arkhipov, N.V. Dvoretskaja, G. Sominski

引用次数: 0

Processes in space charge of high-power microwave devices: Diagnostics and control 大功率微波器件空间电荷过程:诊断与控制

Proceedings International University Conference 'Electronics and Radiophysics of Ultra-High Frequencies' (Cat. No.99EX356) Pub Date : 1999-05-24 DOI: 10.1109/UHF.1999.787938

G. Sominski

引用次数: 0

Numerical simulation of high power klystron output systems 大功率速调管输出系统的数值模拟

Proceedings International University Conference 'Electronics and Radiophysics of Ultra-High Frequencies' (Cat. No.99EX356) Pub Date : 1999-05-24 DOI: 10.1109/UHF.1999.787974

S. Silaev

引用次数: 0

Plasma electronics. Theoretical and experimental investigations of plasma nonlinearity in the traveling-wave tube oscillators 等离子体电子产品。行波管振荡器中等离子体非线性的理论与实验研究

Proceedings International University Conference 'Electronics and Radiophysics of Ultra-High Frequencies' (Cat. No.99EX356) Pub Date : 1999-05-24 DOI: 10.1109/UHF.1999.787952

Y. Bliokh

{"title":"Plasma electronics. Theoretical and experimental investigations of plasma nonlinearity in the traveling-wave tube oscillators","authors":"Y. Bliokh","doi":"10.1109/UHF.1999.787952","DOIUrl":"https://doi.org/10.1109/UHF.1999.787952","url":null,"abstract":"Many years of plasma electronics development has led to powerful microwave devices creation. Due to use of plasma-filled electromagnetic structures these devices exhibit significant increase of efficiency, power and radiation bandwidth. Plasma-filled traveling-wave oscillators have been developed and studied. Special investigations of low frequency plasma oscillations, which appear in the powerful plasma-filled microwave devices, have been carried out. Such oscillations are one of the possible reasons for microwave generation pulse shortening. The usual premise of many investigations of beam-plasma instability is the assumption of independence of plasma parameters from microwave power. However various reasons for a dependence exist and the main are high frequency pressure (HFP) and high frequency discharge. Both these reasons lead to the appearance of a plasma longitudinal inhomogeneity. The resonance character of a beam-wave interaction makes it very sensitive to the inhomogeneity of the medium where the wave is propagated. Experiments are described which show that the role of HFP in increasing microwave power growth. It is confirmed by the large difference between plasma densities near the input and output ends of the system.","PeriodicalId":348319,"journal":{"name":"Proceedings International University Conference 'Electronics and Radiophysics of Ultra-High Frequencies' (Cat. No.99EX356)","volume":"129 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-05-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114540152","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

On a new approach to designing of wideband klystron amplifiers 宽带速调管放大器设计的一种新方法

Proceedings International University Conference 'Electronics and Radiophysics of Ultra-High Frequencies' (Cat. No.99EX356) Pub Date : 1999-05-24 DOI: 10.1109/UHF.1999.787868

Y.L. Bobrovsky, A. Gavrilenko, S. Rudakov

引用次数: 0