Patent ID: 6521890
Filing Date: 2003-02-18
Classification: G01N,H01J

Abstract:
A method of machining a sample using a focused ion beam, comprising:acquiring a scanning ion microscopic image of the sample at each of a plurality of preset time intervals; upon each acquisition, updating reference image data D[nâˆ’1] in a specified region inside a scanning ion microscopic image with image data acquired at the previous time (nâˆ’1) and updating present image data D[n] in the specified region inside a scanning ion microscopic image with image data acquired in a present time (n), where n=1, 2 3, . . . ; calculating a position displacement of the image based on the reference image data D[nâˆ’1] and present image data D[n]; and correcting a machining position by displacing an irradiation position of the focused ion beam by the calculated position displacement.