Ionisation chamber
Maker
Peter MacCallum Cancer Centre
Date
1960s
Description
Parallel Plate ionisation chamber. Five circular disks on a large circular metal plate. When you put radiation in a beam it changes the beam's charter to gauge its true dose – x-ray beams are easy to measure – but electrons were not as easy to measure in the early days and not as much was known about how it was absorbed. This connects to an extrapolation chamber.
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