High-frequency devices with weakly relativistic hollow thin-wall electron beams

2012 ◽  
Vol 19 (2) ◽  
pp. 020704 ◽  
Author(s):  
V. L. Bratman ◽  
A. E. Fedotov ◽  
P. B. Makhalov
Keyword(s):  
High Frequency ◽  
Electron Beams ◽  
Thin Wall ◽  
High Frequency Devices

SiC – a semiconductor for high-power, high-temperature and high-frequency devices

1994 ◽  
Vol T54 ◽  
pp. 283-290 ◽  
Author(s):  
E Janzén ◽  
O Kordina ◽  
A Henry ◽  
W M Chen ◽  
N T Son ◽  
...  
Keyword(s):  
High Temperature ◽  
High Power ◽  
High Frequency ◽  
High Frequency Devices

scholarly journals Simultaneously Enhanced Thermal Conductivity and Breakdown Performance of Micro/Nano-BN Co-Doped Epoxy Composites

Materials ◽  
2021 ◽  
Vol 14 (13) ◽  
pp. 3521
Author(s):  
Chuang Zhang ◽  
Jiao Xiang ◽  
Shihang Wang ◽  
Zhimin Yan ◽  
Zhuolin Cheng ◽  
...  
Keyword(s):  
Thermal Conductivity ◽  
High Frequency ◽  
Breakdown Strength ◽  
Epoxy Composites ◽  
Endurance Time ◽  
Insulating Materials ◽  
Power Frequency ◽  
High Frequency Devices ◽  
Co Doped ◽  
Enhanced Thermal Conductivity

Micro/nano- BN co-doped epoxy composites were prepared and their thermal conductivity, breakdown strength at power frequency and voltage endurance time under high frequency bipolar square wave voltage were investigated. The thermal conductivity and breakdown performance were enhanced simultaneously in the composite with a loading concentration of 20 wt% BN at a micro/nano proportion of 95/5. The breakdown strength of 132 kV/mm at power frequency, the thermal conductivity of 0.81 W∙m−1∙K−1 and voltage endurance time of 166 s were obtained in the composites, which were approximately 28%, 286% and 349% higher than that of pristine epoxy resin. It is proposed that thermal conductive pathways are mainly constructed by micro-BN, leading to improved thermal conductivity and voltage endurance time. A model was introduced to illustrate the enhancement of the breakdown strength. The epoxy composites with high thermal conductivity and excellent breakdown performance could be feasible for insulating materials in high-frequency devices.

On applicability of absorbing rectilinear electron beams in high-frequency gyrotrons operating at cyclotron harmonics

2020 ◽  
Vol 27 (6) ◽  
pp. 064501
Author(s):  
Andrey P. Fokin ◽  
Mikhail Yu. Glyavin ◽  
Vladimir N. Manuilov ◽  
Ivan V. Osharin ◽  
Andrey V. Savilov
Keyword(s):  
High Frequency ◽  
Electron Beams ◽  
Cyclotron Harmonics

Fabrication of highly resistive La–Zn co-substituted spinel strontium nanoferrites for high frequency devices applications

2021 ◽  
Vol 259 ◽  
pp. 124031
Author(s):  
Iqbal Ahmad ◽  
Syed Mujtaba Shah ◽  
Muhammad Nadeem Zafar ◽  
Saleem Ullah ◽  
Anwar Ul-Hamid ◽  
...  
Keyword(s):  
High Frequency ◽  
High Frequency Devices

High ferromagnetic resonance and thermal stability spinel Ni0.7Mn0.3−xCoxFe2O4 ferrite for ultra high frequency devices

2012 ◽  
Vol 111 (7) ◽  
pp. 07A516 ◽  
Author(s):  
Jaejin Lee ◽  
Yang-Ki Hong ◽  
Woncheol Lee ◽  
Gavin S. Abo ◽  
Jihoon Park ◽  
...  
Keyword(s):  
Thermal Stability ◽  
Ferromagnetic Resonance ◽  
High Frequency ◽  
Ultra High Frequency ◽  
High Frequency Devices

scholarly journals Production of thin wall welded titanium tubes by high frequency pulsed arc welding.

1986 ◽  
Vol 26 (5) ◽  
pp. 484-490 ◽  
Author(s):  
Yoshiyuki MIYAMOTO ◽  
Takashi NISHIMURA ◽  
Yoshihiro FUKUHARA ◽  
Yuji KOYAMA ◽  
Kenji NARITA ◽  
...  
Keyword(s):  
High Frequency ◽  
Arc Welding ◽  
Thin Wall ◽  
Pulsed Arc Welding ◽  
Pulsed Arc
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