Charged particle beam apparatus
View Patent ↗A sample measuring method and a charged particle beam apparatus are provided which remove contaminants, that have adhered to a sample in a sample chamber of an electron microscope, to eliminate adverse effects on the subsequent manufacturing processes. To achieve this objective, after the sample measurement or inspection is made by using a charged particle beam, contaminants on the sample are removed before the next semiconductor manufacturing process. This allows the contaminants adhering to the sample in the sample chamber to be removed and therefore failures or defects that may occur in a semiconductor fabrication process following the measurement and inspection can be minimized.
1. A charged particle beam apparatus comprising:
a charged particle source;
a sample stage a sample on which to put a sample to be radiated with a charged particle beam emitted from the charged particle source;
a vacuum chamber to evacuate a space surrounding the sample to a vacuum; and
a controller to control a heating device for heating the sample;
wherein the controller controls the heating device so that the heating device heats the sample when or after the space surrounding the sample is opened to the atmosphere after the sample has been radiated with the charged particle beam.
2. A charged particle beam apparatus according to claim 1 , wherein the controller controls the heating device to heat the sample to a temperature higher than 100° C. and lower than 200° C.
3. A charged particle beam apparatus according to claim 2 , wherein the controller controls the heating device to heat the sample during a time in which fluorocarbon compounds adhering to the sample can be removed.
4. A charged particle beam apparatus according to claim 1 , wherein a measuring device is installed in the vacuum chamber to measure contaminants in the vacuum chamber and, when the contaminants are detected or more than a predetermined amount of the contaminants is detected by the measuring device, the sample is heated.
5. A charged particle beam apparatus according to claim 4 , wherein the contaminants are fluorocompounds.