DC emission characteristic of Sc- Doped Impregnated Dispenser cathodes

Xi Wang; Wei Liu; Yiman Wang; Yuntao Cui; Jinshu Wang

doi:10.1109/ivesc.2012.6264176

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DC emission characteristic of Sc- Doped Impregnated Dispenser cathodes

Xi Wang Wei Liu Yiman Wang Yuntao Cui Jinshu Wang

Year: 2012 Pages: 185-186

DOI: 10.1109/ivesc.2012.6264176

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Abstract

Emission properties of Scandia Doped Impregnated (SDI) cathodes tested at DC model has been investigated in close-spaced diodes with water-cooled copper anodes. Space Charge Limited (SCL) current density of over 40 A/cm ² has been measured at 950°C _b after temperature compensation for electron cooling. The life test has lasted for more than 500 hours and is going on.

Keywords:

Cathode Anode Diode Doping Physics Electrical engineering Materials science Optoelectronics Analytical Chemistry (journal) Chemistry Electrode Physical chemistry Engineering Organic chemistry

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Gyrotron and Vacuum Electronics Research

Physical Sciences → Physics and Astronomy → Atomic and Molecular Physics, and Optics

Electrostatic Discharge in Electronics

Physical Sciences → Engineering → Electrical and Electronic Engineering

Semiconductor materials and devices

Physical Sciences → Engineering → Electrical and Electronic Engineering

DC emission characteristic of Sc- Doped Impregnated Dispenser cathodes

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