Time of Flight¶
A time of flight mass spectrometer first accelerates particles to a given kinetic energy (KE) with an electric field. At the end of the acceleration region, particles will have obtained the same KE but different velocities depending on mass (KE = (1/2) m v^2). The particles are then flown through a field free region. Due to their different velocities, they arrive at the detector at different times, which allows measuring their mass to charge (m/z) ratio.
See the SIMION Example: tof - basic TOF example in SIMION.
Screenshots are below.
3D view of time of flight system.
Cutway to see particle inside reflectron.
PE view of reflectron.