Patent ID: 7301159
Filing Date: 2007-11-27
Classification: H01J

Abstract:
1. A charged particle beam apparatus comprising: a charged particle source; a focusing lens system for focusing a charged particle beam drawn out from the charged particle source; a blanking electrode for making the focused charged particle beam ON/OFF on a sample; a deflection electrode for deflecting to scan the focused charged particle beam; a movable sample stage mounted with the sample irradiated with the focused charged particle beam; a gas gun for locally blowing a gas to a position of irradiating the focused charged particle beam on a surface of the sample; a secondary charged particle detector for detecting a secondary charged particle generated by irradiating the focused charged particle beam to the sample; two pieces of probers brought into contact with two points on the surface of the sample; a voltage source for applying a constant voltage between the two points with which the probers are brought into contact; and an ammeter for measuring a current flowing between the two points.