Patent ID: 6342265
Filing Date: 2002-01-29
Classification: C23C,C30B,G01B,G01N,Y10S

Abstract:
A method for measuring a property of a film deposited on a substrate in a growth chamber both in real time and in situ comprising the steps of:implanting one or more alpha sources in the substrate, placing the substrate in the growth chamber, growing the film on the substrate, detecting, in real time and in situ, the loss of energy of alpha emissions of the substrate as the film is grown on the substrate in the chamber with a detector, protecting the detector from growth chamber deposition with a shield, calibrating the detector with a calibration source, during said growth step, said calibration source being protected from growth chamber deposition by the shield, and calculating, after said step of calibrating, a property of the film grown on the substrate using the loss of energy of the alpha emissions from the source.