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| • | Electron
Multipliers: A discrete-dynode |
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| electron
multiplier is designed for |
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| detection of
positive ions. Each dynode |
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| is held at
successively higher voltage |
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| and there is a
burst of electrons that is |
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| emitted when
struck by energetic |
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| electrons or
ions. A continuous-dynode |
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| electrons
electron multiplier is a |
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| trumpet-shaped
device made of glass |
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| that is heavily
doped with lead. |
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