Related Experiment Video
Updated: Jan 25, 2026

Design and Use of a Full Flow Sampling System FFS for the Quantification of Methane Emissions
Published on: June 12, 2016
Design and development of thermionic emission microscope for the characterization of multi-beam cathode
1School of Basic Science, Indian Institute of Technology, Bhubaneswar, 752050, India.
Abstract:
Thermionic emission microscope (THEM) is an important analytical research tool to study spatial emission distribution of a thermionic cathode. The criticality of its design and development stems from the need to characterize the inhomogeneous emission nature of the impregnated cathode surface. In this paper the design of lens and deflection plates for studying multi-beam cathode (MBC) is presented. To understand the electron optical performance of THEM, simulations were carried out using the simulation tools 2D-TRAK and Omni TRAK. These results were further validated using another software tool CST Particle Studio. The influence of various parameters of MBC such as protrusion, diameter of button and inter-button spacing have been studied.
More Related Videos
06:58Electrochemical Etching and Characterization of Sharp Field Emission Points for Electron Impact Ionization
Published on: July 12, 2016
06:21Design and Development of a Three-Dimensionally Printed Microscope Mask Alignment Adapter for the Fabrication of Multilayer Microfluidic Devices
Published on: January 25, 2021
Related Concept Videos
Design of Prismatic Beams for Bending
Emission Spectra
Beams
Based on geometry, beams can be straight, tapered, or curved. Straight beams are the most common type and have a constant cross-section throughout their length. Tapered beams, on the other hand, have a varying cross-section along...
Group Design
Deflection of a Beam
Singularity functions, described in an earlier lesson, are powerful mathematical tools that represent discontinuities within a function commonly encountered in structural loading...
Prismatic Beams: Problem Solving
The design begins with analyzing the beam as a free body to identify moments and force balances, thereby determining support reactions. Next, the...