 Fast atom bombardment

Fast Atom Bombardment (FAB) is a technique used in mass spectrometry for the ionization of samples, particularly those that are non-volatile and thermally labile. Unlike traditional ionization methods, FAB allows the analysis of larger biomolecules, such as proteins, peptides, and other complex organic compounds. In the FAB process, a sample is typically dissolved in a suitable solvent and then bombarded with a beam of energetic atoms, often xenon or argon.