Results 141 to 150 of about 2,693 (187)

Pause of the target gliding microtuble on the virtual cathode

Biochemical and Biophysical Research Communications, 2019
We report the transient response of gliding microtubules on a virtual cathode. In vivo activities, microtubule-kinesin systems are known to act as motor proteins with respect to cell motility cytokinesis and cellular transport by hydrolyzing ATP molecules.
Kenta Hatazawa, Hiroki Miyazako, Ryuzo Kawamura, Takayuki Hoshino   +3 more
openaire   +4 more sources

Computer simulation of virtual cathode oscillations

Journal of Applied Physics, 1990
The dynamics of relativistic electron beam and the oscillations of the virtual cathode in the vircator (virtual cathode oscillator) have been investigated by electrostatic particle-in-cell computer simulations. A specially developed PIC (particle-in-cell) computer code is employed in this study. In the diode region, cathode to anode, the solid electron
Tsang-Lang Lin, Wen-Ting Chen, Wen-Chung Liu, Yuan Hu, Mien-Win Wu   +4 more
exaly   +4 more sources

The virtual cathode microwave amplifier experiment

Journal of Applied Physics, 1989
This paper describes the results of an experiment that tests a new high-power microwave amplifier concept that uses the virtual cathode phenomenon as an amplifier rather than as a free-running oscillator. The virtual cathode is surrounded by a cavity resonator that is driven by an input signal.
M. V. Fazio, J. Kinross-Wright, B. Haynes, R. F. Hoeberling   +3 more
openaire   +3 more sources

Output Characteristics of the Axially Extracted Virtual Cathode Oscillator With a Cathode-Wing

IEEE Transactions on Plasma Science, 2009
Having the merits of conceptual simplicity, high-output-power capacity, and wide tuning characteristics, the vircator (virtual cathode oscillator) has been investigated as a high-power microwave (HPM) generator. In axial vircator, the power, frequency, and pulsewidth are all sensitive to the cathode shape, and the frequency depends strongly on the ...
null Ki Baek Song, null Jeong Eun Lim, null Yoonho Seo, null Eun Ha Choi   +3 more
openaire   +3 more sources

Theory of feedback in generators with virtual cathode. Analytical theory of virtual cathode

2004 14th International Crimean Conference "Microwave and Telecommunication Technology" (IEEE Cat. No.04EX843), 2004
The inhomogeneous problem of electric oscillation in the space with a virtual cathode was solved for the first time. These oscillation spectra were found to depend upon the cathode location (and consequently upon the cathode injection current). Frequency values and oscillation increments are given.
I.I. Magda, A.V. Pashchenko, S.S. Romanov, I.N. Shapoval, V.E. Novikov   +4 more
openaire   +1 more source

Magnetron with virtual cathode

2013 Abstracts IEEE International Conference on Plasma Science (ICOPS), 2013
The lifetime limitation of high power magnetrons is failure of their cathodes due to intense electron bombardment [1]. In the present work we study the operation of a compact relativistic magnetron [2] with a virtual cathode (VC) in the interaction space of the device instead of a physical cathode.
Mikhail Fuks, Edl Schamiloglu
openaire   +1 more source

Cathode and Anode Optimization in a Virtual Cathode Oscillator

IEEE Transactions on Dielectrics and Electrical Insulation, 2007
We are fabricating and testing several different types of cathodes for the same vircator driven by a single shot Marx generator and pulse forming line (300 kV, 60 ns, 30 Omega). The cathodes types, each with an emitting area of ~32 cm2, include the original velvet with a new geometry, carbon fiber, pin-array, and an array of all metal cathodes.
Y. Chen, J. Mankowski, J. Walter, M. Kristiansen, R. Gale   +4 more
openaire   +1 more source

Measuring the virtual cathode velocity

Technical Physics Letters, 2008
An electron beam with a virtual cathode (VC) transported in a two-section drift tube of a SINUS-7 high-current electron accelerator has been studied. The dependence of the VC velocity on the injected current has been experimentally determined for the first time.
S. Ya. Belomyttsev, A. A. Grishkov, S. A. Kitsanov, I. K. Kurkan, S. D. Polevin, V. V. Ryzhov, R. V. Tsygankov   +6 more
openaire   +1 more source

Virtual Cathode Reflex Oscillators

Eighth IEEE International Conference on Pulsed Power, 1991
A new approach for realizing virtual cathode with dielectric tube is presented. And several possible microwave radiation sourceses are proposed. The approach is also helpful to the study of intense relativistic electron beam microwave and beam-beam interactions.
null Wang Pingshan, null Ha-Kesong, null Tao Zucong   +2 more
openaire   +1 more source

Theory of the virtual cathode oscillator

Physics of Plasmas, 2001
A one-dimensional analytical theory is developed to describe the behavior of the virtual cathode oscillator. Theoretical predictions for the microwave frequency and efficiency have been obtained. The results suggested that the feedback of the microwave field to the virtual cathode is very important for the microwave efficiency which, under optimum ...
Weihua Jiang, Magne Kristiansen
openaire   +1 more source