Timed photon counter 5 ΔV 4 ΔV 3 ΔV 30 μm 2 ΔV ΔV Diameter 30 μm Pitch

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Presentation transcript:

Timed photon counter 5 ΔV 4 ΔV 3 ΔV 30 μm 2 ΔV ΔV Diameter 30 μm Pitch Diameter 30 μm Pitch 55 μm

New Setup & Measurement method Scanning Electron Microscope: Electron beam energy Measure beam current Acquire image (4.2 min) Keithley 2450 Sourcemeters Measure Sample Current Measure Collector Current Repeat for different beam energies Process data TiN [2.5 nm] MgO [5 nm]

Preliminary results: Electron yields

Preliminary results: Extracting field ΔV Sample [V] Collector Electron energy [eV] Landing energy [eV] 50 -50 1200 1150 100 +50 200 +150 300 -200 +100 1000 400 +200