Maltese Cross Tube

High-vacuum electron tube with divergent electron gun aimed at a fluorescent screen partially obscured by a Maltese cross. For demonstrating the linear propagation of electrons in the absence of applied electromagnetic fields by projecting the shadow of a Maltese cross onto the fluorescent screen. Application of a magnetic field using the Helmholtz Coils D allows for students to study the fundamental science of electron optics, such as beam focusing.

Specifications

Max. filament voltage: 6.3 V AC

Max. anode voltage: 5 kV

Anode current: approx. 0.1 mA at 4 kV