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Studies of behaviors and 2-D imaging of hydrogen on solid surfaces

In the field of semiconductor, fuel cell and metallurgical industries, studies of behaviors of hydrogen in material are important issue. However, detection of hydrogen in solid or on surfaces was hardly performed because no commercially available instrument. Recently we have developed imaging system of hydrogen on solid surfaces using an electron-stimulated desorption (ESD) microscopy. The ESD measures hydrogen and oxygen ions stimulated electronically on the solid surface and detects using time-of-flight (TOF) techniques. When a microfocused electron gun is used in scanning-mode with pulsed electron beam, it works as a scanning electron-stimulated desorption ion microscopy (SESDIM).