Effect of carbon-fiber cathode on output pulse width and energy

deng pan; liu lie; wen jian-chun

Volume 19 Issue 06

Jun. 2007

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Article Navigation > High Power Laser and Particle Beams > 2007 > 19(06): 0-

niu hong-chang, qian bao-liang. Particle simulation of compact L-band coaxial relativistic backward wave oscillator[J]. High Power Laser and Particle Beams, 2006, 18.

Citation:

deng pan, liu lie, wen jian-chun. Effect of carbon-fiber cathode on output pulse width and energy[J]. High Power Laser and Particle Beams, 2007, 19.

niu hong-chang, qian bao-liang. Particle simulation of compact L-band coaxial relativistic backward wave oscillator[J]. High Power Laser and Particle Beams, 2006, 18.

Citation:

deng pan, liu lie, wen jian-chun. Effect of carbon-fiber cathode on output pulse width and energy[J]. High Power Laser and Particle Beams, 2007, 19.

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Effect of carbon-fiber cathode on output pulse width and energy

1.
College of Optoelectric Science and Engineering,National University of Defense Technology,Changsha 410073,China;
2.
Electronic Engineering Institute of the People’s Liberation Army,Hefei 230037,China

Publish Date: 2007-06-15

Abstract

Abstract

The carbon-fiber cathode with CsI was substituted for the stainless steel cathode in the reflex triode virtual cathode oscillator experimental device. The carbon-fiber cathode vircator output microwaves with pulse width over 200 ns, which was about 30% longer than that of stainless steel cathode, and the ratio of the pulse areas was about 2.273, which meant the energy of single pulse of the former was double the latter’s. It was analysed that the complex emission mechanism, characteristic and configuration of the carbon fiber cathode slowers the plasma expansion velocities and lowers the temperature, thus extends the output pulse width and enhances the output energy.
- high power microwave,
- carbon fiber cathode,
- reflex triode virtual cathode oscillator,
- vircator,
- pulse width

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