Experimental and Quantum-chemical Studies on Dissociative Photoionization

Dissociation photoionization of molecules is a common photochemical process upon excitation of vacuum ultraviolet and has played a crucial part in ion chemistry in the atmosphere. Important information as ionic structures, ionization mechanisms and energetic for ions, molecules and radicals have been explored with various photoionization methods and theoretical calculations. In this report, we describe the new results of two atmospherically important compounds upon dissociative photoionization to show the advantages of combining photoionization mass spectrometry with quantum chemical calculations.