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High-voltage Nanosecond Pulse Generators of the ＂PROTEUS＂ Line for Discharge with Runaway Electrons Applications

高电压技术 2013年第10期39卷 2506-2513页

作者： Anatoly N. Maltsev Maxim V. Martynov Alexey V. Mikov Viktor G. Podkovyrov Leonid L. Zhukov Alexander Yu. Ivanov Institute of Atmospheric Optics Russian Academy of Sciences Tomsk 634021 Russia electrodynamic systems & technologies LLC Tomsk 634021 Russia Institute of High-current Electronics Russian Academy of Sciences Tomsk 634021 Russia

Many applications of gas discharge with runaway electrons (DRE) require high-voltage pulse generators (HVPG) with very high increasing rate of output voltage (up to 100 kV/ns), long operation life and low cost. Such HVPGs have to be controlled by external computer for working in combination with other modern equipment. In this paper, some HVPGs development for DRE application in industry and medicine are described. The functional structure and operation principles are discussed for the HVPG of "PROTEUS' line. It is shown that on different loads, the "PROTEUS" generators can produce high-voltage nanosecond pulse with energy up to 1 J, output voltage amplitude from zero to 150 kV, and pulse repetition frequency from zero to 2 000 Hz. Four models of the "PROTEUS" generators are described. The output voltage leading front duration is 150 ns for the "PROTEUS-I" model, 10-20 ns for the "PROTEUS-II", 2 ns for the "PROTEUS-IH" and 0.5 ns for the "PROTEUS-IV". DRE parameters obtained by using "PROTEUS" HVPGs are demonstrated. Some results of DRE application in solid-state surface modification of natural textile and polymer films are shown as well.

关键词： PROTEUS 纳秒脉冲发生器电子应用气体放电高压失控输出电压脉冲重复频率

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All‐metallic wide‐angle metasurfaces for multifunctional polarization manipulation

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Opto-Electronic Advances 2019年第3期2卷 19-24页

作者： Xiaoliang Ma Mingbo Pu Xiong Li Yinghui Guo Xiangang Luo State Key Laboratory of Optical technologies on Nano-Fabrication and Micro-Engineering Institute of Optics and ElectronicsChinese Academy of SciencesChengdu610209China School of Optoelectronics University of Chinese Academy of SciencesBeijing 100049China

Optical camouflage is a magical capability of animals as first noticed in 1794 by Erasmus Darwin in Zoonomia,but current biomimetic camouflage strategies cannot be readily applied in complex environments involving multispectral and in particular multi-polarization *** we develop a plasmonic approach toward broadband infrared polarimetric crypsis,where the polarized thermal emission near the pseudo-Brewster angle is the main signal source and no existing polarizing camouflage technique has been discovered in *** on all-metallic subwavelength structures,an electrodynamic resistance-reduction mechanism is proposed to avoid the significant polarization-dependent infrared absorption/*** is also found that the structured metal surface presents giant extrinsic anisotropy regarding the phase shift between orthogonal polarization states,which helps to realize ultrahigh-efficiency and tunable polarization conversion in an unprecedented ***,we note that the catenary optical theory may provide a useful means to explain and predict these unusual performances.

关键词： metasurface polarization thermal radiation crypsis Brewster angle catenary opti

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