The beam of electrons passing through the chamber are detected electrically using a detector.
Only ions with the correct mass/charge ratio are detected - the others are deflected too far and are eventually removed using a vaccum.
- The signal is amplified and recorded
Initially a vacuum must be placed in the chamber to remove any unwanted ions - that werent deflected from a previous sample, or air molecules.This is so that the ions have a free runthrough the machine
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