quest 3 detectors and stuff

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12 Terms

1
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IR Source

Globar and Nichrome wire

2
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Visible Source

W filament: 320-3500 nm; hallow cathode lamp: line source, metal dependent; laser: line source, metal dependent;

3
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UV Source

Xe arc lamp: 250,600 nm, deuterium lamp: 180-37 nm

4
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Filter

absorb unwanted light

5
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prism

non-linear dispersion

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grating

linear dispersion overtones

7
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thermocouple detector

ir, voltage

8
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golay cell

ir, pressure

9
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photovoltaic detector

hv ejects electrons from semiconductor, not powered

10
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phototube

photon ejects electrons from metal cathode, powered

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PMT

photon ejects electrons from metal cathode, powered, more sensitive

12
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photodiode

can be used in arrays to measure multiple wavelengths simultaneously