Energy-sudden ionization technique

Energy-sudden ionization technique One in which energy is provided to a thermally labile molecule so rapidly that it is desorbed and ionized before decomposition takes place. 

The problem of the successful ionization of thermally labile molecules has been addressed by the introduction of energy-sudden techniques, such as fast-atom bombardment (FAB), which rely on the fact that energy may be provided to the molecule so rapidly that desorption takes place before decomposition may occur. 

---