1D atom probe tomography (APT) Pulsed field evaporation provides precise control over the instant in time of the departure of the ion from the tip's surface. The time-of-flight of (ToF)the ion is related Image gas atom MCP Phosphor screen to the mass-to-charge ratio of the ion: Probe hole Reflectron dn WI m 2e n 12 Start signal Stop signal MCP detector Equally sensitive to HVHV pulser 8ch Timer C both light and heavy Interface Personal Computer element. 11 K.Hono /Progress in Materials Science 47(2002)621-729Image gas atom FIM tip MCP Phosphor screen Probe hole Reflectron MCP detector Start signal Stop signal 2 2 2 Vt l e n m = 1D atom probe tomography (APT) The time-of-flight of (ToF) the ion is related to the mass-to-charge ratio of the ion: K. Hono /Progress in Materials Science 47 (2002) 621–729 Pulsed field evaporation provides precise control over the instant in time of the departure of the ion from the tip’s surface. Equally sensitive to both light and heavy element. 11