The Photodissociation dynamics of water following O 1s inner-shell excitation

Kuniwake, Miki*; Harries, J.; Homma, Kenji*; Gejo, Tatsuo*

When the O 1s electron of a water molecule is excited, Auger decay and dissociation occurs. Near threshold, the Auger electron is faster than the photo-electron, a post-collision interaction (PCI) occurs, and the photoelectron can be recaptured by either the parent ion or a fragment ion. Here we use Auger electron spectroscopy to investigate this process.