发明名称 |
SCANNING ELECTRON MICROSCOPE |
摘要 |
The present invention has an object to provide a scanning electron microscope which suppresses a potential gradient produced by preliminary charge without changing lens conditions of an electron microscope. As an aspect to achieve the above object, there is proposed a scanning electron microscope in which a scanning deflector is controlled so that a second beam is scanned to detect electrons released from a sample after scanning a first beam on the sample to charge the surface of the sample and the first beam is scanned so that charge density in a surrounding part within a scanned area by the first beam is increased relatively as compared with a center part within the scanned area by the first beam.
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申请公布号 |
US2013306866(A1) |
申请公布日期 |
2013.11.21 |
申请号 |
US201213981175 |
申请日期 |
2012.01.25 |
申请人 |
HOQUE SHAHEDUL;KAWANO HAJIME;HITACHI HIGH-TECHNOLOGIES CORPORATION |
发明人 |
HOQUE SHAHEDUL;KAWANO HAJIME |
分类号 |
H01J37/28 |
主分类号 |
H01J37/28 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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