Patent ID: 7518111
Filing Date: 2009-04-14
Classification: G01N,G03H,H01J

Abstract:
1. An electron microscope, comprising: a sample stage for mounting a sample thereon, an irradiation optical system for irradiating said sample with an electron beam, an electron-beam detector for detecting said electron beam which has passed through said sample, an electrically-conductive fiber located at a position through which said electron beam will pass between said sample stage and said electron-beam detector, said electron beam having passed through said sample, means for applying an electric voltage to said electrically-conductive fiber, and an arithmetic-operation apparatus for measuring amount of a distortion from a detection signal of said electron-beam detector, and calculating an electric-field or magnetic-field vector in said sample from said distortion amount, said distortion occurring in a shadow of said electrically-conductive fiber projected onto a transmission image of said sample.