Abstract
The photoionization of diatomic and polyatomic molecules with intense femtosecond X-ray pulses from the Linac Coherent Light Source free electron laser have been investigated using photoion spectrometry. The dominant mechanism measured is multiple core-ionization-Auger decay cycles leading to molecular fragmentation followed by the production of highly charged atomic ions. This work sheds light on fundamental aspects of matter–intense X-ray interaction and impacts research relevant to matter under extreme conditions and molecular radiation damage, pertinent to single bio-molecule imaging.
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