发明名称 |
Scanning electron microscope |
摘要 |
A scanning electron microscope capable of securing a high ion detection efficiency in spite of a short working distance and the adaptability for high resolution is disclosed. An ion detector for detecting ions is arranged nearer to an electron source than a first pressure limiting aperture for maintaining the specimen chamber in a predetermined vacuum. This configuration makes it possible to achieve the high resolution of the semi-in-lens objective lens on one hand and to detect the ions generated by the collision between the secondary electrons and the gas molecules on the other hand.
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申请公布号 |
US7557346(B2) |
申请公布日期 |
2009.07.07 |
申请号 |
US20070717093 |
申请日期 |
2007.03.13 |
申请人 |
HITACHI HIGH-TECHNOLOGIES CORPORATION;HITACHI HIGH-TECH SCIENCE SYSTEMS |
发明人 |
KATANE JUNICHI;ITO SUKEHIRO |
分类号 |
H01J37/28;H01J37/244 |
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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