摘要: A novel atom probe is described which can determine the mass‐to‐charge ratios of all ion species produced during a single desorption event or individual at several preselected crystallographic locations each event. This accomplished without tip movement in an instrument no larger than conventional field microscope by using new channel plate photomultiplier detector. Alignment, aiming, and pulse stability problems common to previous designs have been eliminated. Although present mass resolution 4 amu m/n = 184/3, isotope resolution, if desired, seems possible.
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