Method and apparatus for tandem mass spectrometry with MALDI-TOF ion source

摘要

A MALDI ion source for tandem mass spectrometers includes a pulsed energy source that generates a pulse of ions from a sample on a sample plate. An ion accelerator includes an input that receives the pulse of ions from the pulsed energy source and generates an electric field that accelerates the pulse of ions. An ion decelerator that generates an electric field that is a mirror image of the electric field generated by the ion accelerator that accelerates the pulse of ions so that the ion decelerator decelerates the accelerated pulse of ions and transmits the decelerated pulse of ions through an exit aperture.