发明授权
US08164067B2 Arrangement and method for the contrast improvement in a charged particle beam device for inspecting a specimen 有权
用于检查样本的带电粒子束装置的对比度改善的布置和方法

Arrangement and method for the contrast improvement in a charged particle beam device for inspecting a specimen
摘要:
It is provided a charged particle beam device for inspecting a specimen, comprising a charged particle beam source adapted to generate a primary charged particle beam; an objective lens device adapted to direct the primary charged particle beam onto the specimen; and a detector device comprising one or more charged particle detectors adapted to detect a secondary charged particle beam generated by the primary charged particle beam at the specimen and passing through the objective lens device, the secondary charged particle beam comprising a first group of secondary charged particles starting from the specimen with high starting angles and a second group of secondary charged particles starting from the specimen with low starting angles; wherein at least one of the charged particle detectors is adapted to detect depending on the starting angles one group of the first and the second groups of secondary charged particles.
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