Patent ID: 8581219
Filing Date: 2013-11-12
Classification: H01J

Abstract:
1. A composite charged-particle-beam apparatus comprising: an ion beam column which emits an ion beam; an electron beam column which emits an electron beam; a sample chamber having the ion beam column and the electron beam attached thereto; a tertiary electron detector which detects tertiary electrons which are secondary electrons generated when back-scattered electrons induced when a sample is irradiated with the electron beam collide with structures present inside the sample chamber; and a control unit which generates an image based on the detected tertiary electrons while controlling timing of scanning signals of the focused ion beam and scanning signals of the electron beam, and executes emission of the ion beam and display of the image on a display unit based on the tertiary electrons according to the timing, wherein the control unit synchronizes the scanning signals of the ion beam with the scanning signals of the electron beam, and aligns scan positions of both the beams at an identical time if a scanning area of the ion beam is identical to a scanning area of the electron beam.