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Hoofdstuk 3.4

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Plasma spectrometers<br />

• Fourier-transform spectrometers (ICP)<br />

– Michelson-interferometer i.p.v. dispersief systeem<br />

→ veel snellere metingen mogelijk<br />

– breed spectraal bereik: 170-1000 nm en verder<br />

–hoge resolutie<br />

–zeer accurate λ-bepalingen<br />

–grootdynamisch bereik<br />

– in IR: FT detectie<br />

→ betere S/N (detector: ’shot noise’)<br />

in UV/VIS:<br />

→ zelfde S/N (stralingsbron: ’shot + flicker noise’)<br />

– duurder dan dispersieve instrumenten

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