Decomposition of Copper Compounds in X-Ray Photoelectron Spectrometers

Six Cu compounds were analyzed in three different x-ray photoelectron spectrometers (AEI-ES200, LHS-10, and HP-5950A), each equipped with a different type of AI Kα x-ray source, to determine the cause of reduction of copper salts in photoelectron spectrometers The monochromatic source used in the HP 5950A spectrometer did not cause sample degradation Significant sample degradation was observed in the AEIES200, which was attributed to the radiative heating from the x-ray gun The LHS-10 spectrometer, which utilizes a water-cooled x-ray housing, afforded significantly less sample reduction than the AEI ES200 spectrometer