DIFFUSION CLOUD CHAMBER WILSON’S

Wilson’s Cloud Chamber is the classical pattern where alcohol saturates a pad in the chamber and a vacuum pump (reversed tyre pump) is used to draw a partial vacuum to super saturate the remaining air with alcohol vapour.
An Alpha ‘pin source’ in the chamber emanates particles that ionise the air particles along the path. Light source (microscope lamp) to illuminate the cell and a ‘pin source’ of Alpha material is required.