Patent ID: 9275830
Filing Date: 2016-03-01
CPC Classification: H01J

Claim Text:
1. A scanning charged particle microscope for creating an image based on electrons sorted by emission angles and energy comprising: a source of a charged particle beam directed along an optical axis; an objective lens for bringing the charged particle beam emitted from the source into focus at a sample; a scanning deflector for scanning the focused charged particle beam over the sample; a sorting portion for sorting out electrons emitted at given emission angles from electrons released from the sample in response to irradiation of the sample by the charged particle beam; a deflector for producing a deflecting field to deflect the sorted electrons according to emission angles to further sort according to energy of the electrons, said deflector consisting of an inner cylindrical electrode and an outer cylindrical electrode whose cylindrical axes lie on the optical axis such that deflector electrodes produce a static electric field in the path of the electrons sorted out by the emission angle sorting portion and wherein the deflecting field produced by the static electric field sorts electrons according to energy; a detection portion for detecting the deflected electrons; and an image creating portion for creating an image, based on the results of the detection performed by the detection portion.