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5 Cards in this Set
- Front
- Back
Vaporisation
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The sample is turned into a gas using an electrical heater
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Ionisation
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The gas particles are bombarded with high-energy electrons to ionise them. Electrons are knocked off the particles leaving positive ions.
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Acceleration
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The positive ions are accelerated by an electric field.
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Deflection
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The positive ions paths are altered with a magnetic field. Lighter ions have less momentum and are deflected more than heavier ions. For a given field, only ions with a particular mass/charge ratio will make it to the detector.
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Detection
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The magnetic field strength is slowly increased. This changes the mass charge ration of ions that can reach the detector. A mass spectrum is produced.
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