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Magnet/ electric sector instruments are employed for mass analysis using the principle that charged species can be deflected in magnetic and electric fields. The degree of ion deflection in a magnetic field is proportional to the square root of their m/z ratio and the potential through which they are accelerated prior to mass analysis, making the measurements of mass-to-charge ratio very accurate when using this type of mass analyzer. This module will discuss the theory and practice of using magnetic sector mass analyzers.


Topics include:

  • Equations of ion motion
  • Data acquisition modes
  • Electrostatic analyzers
  • Double focusing instruments
  • Ion optics
  • Performance limitations
  • Mass resolution and accuracy