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NUCLEI, ISOTOPES, ISOTOPES SEPARATION (Mass Spectrometer (Application…

- - - - Enrichment or fractionating factor
      - Ratio of relative concentration of the desired isotope after processing to its relative concentration before processing
    - - Amount obtained after the separation
    - - Total amount of material tied up in separation plant
      - very large in plant consisting many stages
    - - Large hold up, long time needed for steady operating conditions to attained
    - - If certain quantity of raw material is fed into separation plant, some material will enriched, impoverished, unchanged
      - Parts of each of 3 fractions will be lost and parts recovered
- - - - Heater to vapourise sample
        
        Electron beam ionises sample
        
        Particles accelerated into magnetic field
        
        Magnetic field separates particles based on mass/charge ratio
  - - - made in an instrument with gas source (measure light element)
      - Gas source mass spectrometry
        
        Different mass between different isotopes lead to fractionation causing measurable effect on the isotopic composition of sample
    - - made by ionization of solid source
  - - - simple design
      - less expensive than other mass spectrometers
      - produce stable ion emissions
      - require stale power supply