High-vacuum electron tube with high-accuracy electron gun and ruled target phosphorescent screen.
Determine the fundamental electron charge-to-mass ratio (e/m), study mean electron velocities using field cancellation, and explore electron optics using this tube. The electron beam trajectory can be manipulated using two methods: 1) deflection induced by the electric field of the built-in plate capacitor, or 2) magnetically using external Helmholtz Coils S (see Recommended). Specifications Max. filament voltage: 6.3 V AC Max. anode voltage: 5 kV Max. capacitor voltage: 500 V Anode current: approx. 0.1 mA at 4 kV (anode) .008m between tick marks on screen