Radiant energy – Means to align or position an object relative to a source or...
Patent
1989-07-11
1991-04-30
Berman, Jack I.
Radiant energy
Means to align or position an object relative to a source or...
250306, 250307, 250309, 250310, 2504921, 2504922, 2504923, 250396R, H01J 37256
Patent
active
050121090
ABSTRACT:
A charged particle beam apparatus comprising a charged particle beam source(s) for generating an ion beam and an electron beam, a focusing lens system for finely focusing each of the generated ion beam and electron beam, a charged particle beam deflecting system for deflecting each of the focused ion beam and electron beam, and a specimen subjected to irradiation thereof with each of the focused ion beam and electron beam is provided with means for detecting the deviation of the irradiation positions of the ion beam and the electron beam on the specimen from each other and means for making the irradiation positions of the ion beam and the electron beam on the specimen coincident with each other on the basis of the result of detection of the deviation of the irradiation positions from each other.
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Mitani Eisuke
Nomura Setsuo
Shichi Hiroyasu
Berman Jack I.
Hitachi , Ltd.
Nguyen Kiet T.
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