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Preliminary study of ferroelectric electron gun

Quanfeng Li

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Abstract

A ferroelectric electron gun was designed and fabricated.The simulation and preliminary experimental results of the gun are reported.The gun uses a planar Ba0.67Sr0.33TiO3(BST67/33)cathode in a Pierce geometry.The gun voltage can reach 80 kV with the pulse width of 80 ns.The designed perveance of the gun is 0.15×10-6 A·V-3/2.In the experiment,the gun voltage gradually increases from 30 kV to 56 kV,and the emission current increases from 0.7 A to 2.5 A.The perveance of the gun is measured as 0.2×10-6 A·V-3/2,mearly the same as the designed value.

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What this paper is about

A ferroelectric electron gun was designed and fabricated.The simulation and preliminary experimental results of the gun are reported.The gun uses a planar Ba0.67Sr0.33TiO3(BST67/33)cathode in a Pierce geometry.The gun voltage can reach 80 kV with the pulse width of 80 ns.The designed perveance of the gun is 0.15×10-6 A·V-3/2.In the experiment,the gun voltage gradually increases from 30 kV to 56 kV,and the emission current increases from 0.7 A to 2.5 A.The perveance of the gun is measured as 0.2×10-6 A·V-3/2,mearly the same as the designed value.

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Available abstract

A ferroelectric electron gun was designed and fabricated.The simulation and preliminary experimental results of the gun are reported.The gun uses a planar Ba0.67Sr0.33TiO3(BST67/33)cathode in a Pierce geometry.The gun voltage can reach 80 kV with the pulse width of 80 ns.The designed perveance of the gun is 0.15×10-6 A·V-3/2.In the experiment,the gun voltage gradually increases from 30 kV to 56 kV,and the emission current increases from 0.7 A to 2.5 A.The perveance of the gun is measured as 0.2×10-6 A·V-3/2,mearly the same as the designed value.

Key concepts: Perveance, Electron gun, Materials science, Rifle, Electron, Voltage, Gun control, Acceleration voltage

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