Patent ID: 9105446
Filing Date: 2015-08-11
Classification: H01J,H02N

Abstract:
1. A charged particle beam apparatus comprising: a charged particle source; an electrostatic chuck that holds a sample to be irradiated by a charged particle beam emitted from the charged particle source; and a sample chamber that maintains a space containing the electrostatic chuck in a vacuum state, wherein the charged particle beam apparatus further includes an ultraviolet light source to irradiate ultraviolet light within the sample chamber, after unloading the sample from the electrostatic chuck, prior to loading another sample to the electrostatic chuck, and an irradiation target member irradiated by the ultraviolet light, the irradiation target member being spaced from an adsorption surface of the electrostatic chuck in a direction perpendicular to the adsorption surface of the electrostatic chuck; wherein the ultraviolet light source and the irradiation target member are disposed so as to irradiate the ultraviolet light to the irradiation target member without irradiating the ultraviolet light to the absorption surface of the electrostatic chuck.