Abstract:
The disclosure relates to sample inspection using an ion-beam microscope. In some embodiments, the disclosure involves the use of multiple detectors, each of which provides different information about a sample.
Abstract:
A method and apparatus for performing a slice and view technique with a charged particle beam system. The feature of interest in an image of a sample is located by machine vision, and the area to be milled and imaged in a subsequent slice and view iteration is determined through analysis of data gathered by the machine vision at least in part. A determined milling area may be represented as a bounding box around a feature, which dimensions can be changed in accordance with the analysis step. In a dual beam system, the FIB is then adjusted accordingly to slice and mill a new face in the subsequent slice and view iteration, and the SEM images the new face. Because the present invention accurately locates the feature and determines an appropriate size of area to mill and image, efficiency is increased by preventing the unnecessary milling of substrate that does not contain the feature of interest.
Abstract:
An electron microscope is offered which has a spherical aberration correction system (10) operating efficiently while preventing intrusion of undesired aberrations. Transfer optics (14) is inserted between a spherical aberration corrector (13) and the objective lens (15). The transfer optics consists of first and second lenses (14a, 14b) each of which is made of a magnetic lens. Electrons passing across a point located at distance r0 from the optical axis (0) are made to enter the first lens within the multipole element (20) . Electrons are made to enter the second lens at distance r1 of the incident point to the objective lens from the optical axis. The ratio M (= r1/r0) is greater than 1.
Abstract:
In an electron microscope for observing an image of a sample (8) using secondary electrons emitted from the sample by two-dimensionally scanning an electron beam (2) on the sample, a low magnification and wide view image of the sample is formed on one frame memory by dividing the frame memory for storing one picture of image into 16 areas and by storing the continuous image data of the surface of the sample obtained by moving said sample into each of said 16 divided areas of the frame memory.
Abstract:
There is provided an electron microscope capable of recording images in a shorter time. The electron microscope (100) includes: an illumination system (4) for illuminating a sample (S) with an electron beam; an imaging system (6) for focusing electrons transmitted through the sample (S); an electron deflector (24) for deflecting the electrons transmitted through the sample (S); an imager (28) having a photosensitive surface (29) for detecting the electrons transmitted through the sample (S), the imager (28) being operative to record focused images formed by the electrons transmitted through the sample (S); and a controller (30) for controlling the electron deflector (24) such that an active electron incident region (2) of the photosensitive surface (29) currently hit by the beam is varied in response to variations in illumination conditions of the illumination system (4).