Ion beam charcteristics of liquid metal ion source with a suppressor for the focused ion beam system

The liquid metal ion sources in focused ion beam (FIB) system have many advantages of high current density, high brightness and low ion energy spread. FIB system have been used widely for surface analysis, modification of integrated circuit, repair and failure analysis, etc. The energy spread charac...

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Main Authors: Booki Min, Hyun Joo Oh, Seung Oun Kang, Eun Ha Choi
Format: Conference Proceeding
Language:English
Subjects:
Ion beams
Ion sources
Laboratories
Liquids
Metals
Plasmas
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creator Booki Min
Hyun Joo Oh
Seung Oun Kang
Eun Ha Choi
description The liquid metal ion sources in focused ion beam (FIB) system have many advantages of high current density, high brightness and low ion energy spread. FIB system have been used widely for surface analysis, modification of integrated circuit, repair and failure analysis, etc. The energy spread characteristics have a direct influence on the chromatic aberration. It is very important to investigate the influence of suppressor on the energy spread and angular distributions for the convergence of focused ion beam. We have investigated the energy spread by using a retarding potential analyzer and angular distribution by using a Faraday cup in liquid metal ion source (LMIS) with suppressor and without suppressor, respectively. It has been shown that the energy spread and angular distributions have been drastically reduced by the suppresor in the LMIS in this experiment, which results in well focusing characteristics in FIB.
doi_str_mv 10.1109/PLASMA.2012.6383838
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subjects Ion beams
Ion sources
Laboratories
Liquids
Metals
Plasmas
title Ion beam charcteristics of liquid metal ion source with a suppressor for the focused ion beam system
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