School of Physics Lecture Demonstration Manual

Ef-2 Bending of an Electron Beam

Published: Tuesday 14 March 2006 - Updated: Tuesday 29 March 2011

Aim

To demonstrate the force experienced by an electron beam in a magnetic field.

Apparatus

Diagrams

Click on pictures to enlarge.

Bending Electron Beam Pic

Bending Electron Beam Diagram

Videos

Bending of an Electron Beam

Description

The apparatus consists of an evacuated tube containing an oblique fluorescent screen upon which the path of the beam is clearly visible. When a magnet is brought up to the device the electron beam is deflected.

Safety notes

Electrical safety 

Sharps safety 

Maintenance 

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