Design and Development of Thermionic Emission Microscope

Barik, RK and Raju, RS and Das, S and Rathore, S (2011) Design and Development of Thermionic Emission Microscope. In: International Vacuum Electronics Conference (IEEE-IVEC 2011), February 21-24, 2011, Bangalore, India. (Submitted)

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Abstract

Thermionic Emission Microscope (THEM) developed at CEERI has an electrostatic immersion lens to magnify the image. The geometry of lens and potentials are optimized to achieve a magnification of about 15 times with a clear image. The design of deflection plates and lens are carried out using OmniTRAK 3-D to ensure required deflection of beam without losing laminarity and beam interception with plates. Faraday cage, containing a narrow aperture, is designed to obtain elemental currents with low secondary emission. The emission picture of a B-Type cathode has been obtained. The results are satisfactory.

Item Type:	Conference or Workshop Item (Paper)
Uncontrolled Keywords:	THEM, OmniTRAK, Dispenser cathode
Subjects:	?? TK ?? Microwave Tubes > Cathodes
Divisions:	Microwave Tubes
Depositing User:	Mr. Rabin Chatterjee
Date Deposited:	21 May 2013 04:41
Last Modified:	21 May 2013 04:41
URI:	http://ceeri.csircentral.net/id/eprint/122

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