Magnetic Sector Mass Analyzers

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