- Patent Title: Method of examining a sample using a charged particle microscope
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Application No.: US16867972Application Date: 2020-05-06
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Publication No.: US11327032B2Publication Date: 2022-05-10
- Inventor: Jan Klusá{hacek over (c)}ek , Tomá{hacek over (s)} Tůma
- Applicant: FEI Company
- Applicant Address: US OR Hillsboro
- Assignee: FEI Company
- Current Assignee: FEI Company
- Current Assignee Address: US OR Hillsboro
- Priority: EP19172810 20190506
- Main IPC: G01N23/2206
- IPC: G01N23/2206 ; G01N23/2209 ; G01N23/2251 ; H01J37/244 ; H01J37/28

Abstract:
The invention relates to a method of examining a sample using a charged particle microscope, comprising the steps of providing a charged particle beam, as well as a sample, and scanning said charged particle beam over at least part of said sample. A first detector is used for obtaining measured detector signals corresponding to emissions of a first type from the sample at a plurality of sample positions. According to the method, a set of data class elements is provided, wherein each data class element relates an expected detector signal to a corresponding sample information value. The measured detector signals are processed, and processing comprises comparing said measured detector signals to said set of data class elements; determining at least one probability that said measured detector signals belong to a certain one of said set of data class elements; and assigning at least one sample information value and said at least one probability to each of the plurality of sample positions. Finally, sample information values and corresponding probability can be represented in data.
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