Electron Specific Charge Apparatus

 

Measure Many Physics Quantities

The Electron Specific Charge Apparatus lets students do four large experiments. First, they measure electron motion in electric and magnetic fields. This includes electric deflection, electric focusing, magnetic deflection, and spiral motion magnetic focusing. Second, they find the electron charge to mass ratio. They also verify the spiral motion equation. Third, they measure a component of Earth's magnetic field. Fourth, they can optionally test the electron lens equation. The error for Earth's field measurement is ≤1%. The error for the charge to mass ratio is ≤3%. This product gives very reliable numbers.

This Electron Specific Charge Apparatus shows at least three focus points on the oscilloscope tube. The spiral motion goes to ≥7π. The tube model is 8SJ31J with a medium afterglow. The filament voltage is 6.3 V at 0.15 A. The acceleration voltage can go up to 1000 V. The constant current source goes from 0 to 2.6 A. The electric deflection sensitivity is Y≥0.38 mm/V and X≥0.25 mm/V. The magnetic deflection sensitivity is Y≥0.3 mm/mA. The long solenoid for the longitudinal field is 205 mm long with 1160 turns. The short solenoid for the transverse field is 20 mm long with 380 turns. The product has all these numbers clearly marked.

The Electron Specific Charge Apparatus uses a modular structure. You connect the correct units for each experiment. The panel layout is clean. The oscilloscope tube is built into the box. We support OEM and ODM. You can send us your technical drawings. We can make according to your design. The minimum order is one unit. You can mix different models in one order. We give a oneyear warranty. Our aftersales service is ready. Many universities already use this product with good feedback.

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