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4 Cards in this Set
- Front
- Back
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Ionisation |
High energy electrons fired from electron gun Knocks an electron from atoms highest energy level Forms positive ions |
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Acceleration |
Ions accelerated to uniform speed by electric field Positive ions attracted to negative plates & accelerate towards it |
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Deflection |
Ions deflected by magnetic field Amount of deflection is dependent on their mass to charge ratio (m/z value) |
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Detection |
Ions strike the detector Electrons jump to neutralise the ions Spaces left on detector allow electrons to move and fill it Generates a current
Size of current is proportional to abundance. |
