Patent ID: 9362083
Filing Date: 2016-06-07
CPC Classification: H01J

Claim Text:
1. A charged particle beam apparatus having a charged particle optical tube for emitting a primary charged particle beam to a sample, and a vacuum pump, the charged particle beam apparatus comprising: an enclosure that makes up part of the charged particle beam apparatus, the inside of the enclosure being evacuated by the vacuum pump; a diaphragm that isolates a space in which the sample is placed so that the pressure of the space is kept higher than that of the inside of the enclosure, the diaphragm being detachable and allowing the primary charged particle beam to permeate or pass therethrough; a sample stage that allows the sample to approach the diaphragm; and an inlet-outlet part that brings in and out a desired liquid or gas in the direction of the underside or the side of the sample, wherein the sample remains out of contact with the diaphragm when irradiated with the primary charged particle beam.