Time of Flight Mass Spec
- Created by: Jadii
- Created on: 11-11-13 20:10
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- Time of Flight Mass Spec
- Ionisation source
- The sample is ionised (bombarded with a beam of electrons)
- Positively charged cations are formed
- The sample is ionised (bombarded with a beam of electrons)
- Analyser
- Ions produced are separated according to their mass
- Detector
- Ions cause the detector to produce an electric current
- A computer system converts into a mass spectrum
- Relative atomic mass of ion can be calculated
- Ions cause the detector to produce an electric current
- Vacuum chamber allows ions to accelerate
- Air particles will slow them down
- Time measurement measures the ions on the flight path
- Light ions will reach the ion-detector first
- Heavy ions will have a longer time of flight and will therefore reach the ion-detector later
- Light ions will reach the ion-detector first
- Ionisation source
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