Perveance of a planar diode with explosive emission finite-diameter cathodes

Y M  Saveliev; W  Sibbett; D M  Parkes

doi:10.1063/1.1506015

Perveance of a planar diode with explosive emission finite-diameter cathodes

Y M Saveliev, W Sibbett, D M Parkes

School of Physics and Astronomy

Research output: Contribution to journal › Article › peer-review

Abstract

Perveance of a planar diode with explosive emission velvet cathodes of 20-100 mm diameters in a range of diode gaps of 0.5-5 cm is investigated experimentally. An empirical universal curve linking the diode perveance and the cathode radius-to-diode gap ratio is determined thus allowing application of a Child-Langmuir model to diodes of finite dimensions. Comparison of experimental results with two-dimensional (2D) computational models is made and a simple method to translate 2D simulation results to the three-dimensional diode configurations is suggested.

Original language	English
Pages (from-to)	2343-2345
Number of pages	3
Journal	Applied Physics Letters
Volume	81
DOIs	https://doi.org/10.1063/1.1506015
Publication status	Published - 23 Sept 2002

Keywords

ELECTRON

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10.1063/1.1506015

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N2 - Perveance of a planar diode with explosive emission velvet cathodes of 20-100 mm diameters in a range of diode gaps of 0.5-5 cm is investigated experimentally. An empirical universal curve linking the diode perveance and the cathode radius-to-diode gap ratio is determined thus allowing application of a Child-Langmuir model to diodes of finite dimensions. Comparison of experimental results with two-dimensional (2D) computational models is made and a simple method to translate 2D simulation results to the three-dimensional diode configurations is suggested.

AB - Perveance of a planar diode with explosive emission velvet cathodes of 20-100 mm diameters in a range of diode gaps of 0.5-5 cm is investigated experimentally. An empirical universal curve linking the diode perveance and the cathode radius-to-diode gap ratio is determined thus allowing application of a Child-Langmuir model to diodes of finite dimensions. Comparison of experimental results with two-dimensional (2D) computational models is made and a simple method to translate 2D simulation results to the three-dimensional diode configurations is suggested.

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ER -

Perveance of a planar diode with explosive emission finite-diameter cathodes

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