Harries, James RGejo, THonma, TKuniwake, MSullivan, JamesLebech, MAzuma, Y2015-12-070953-4075http://hdl.handle.net/1885/26577We have studied the production of long-lived, highly excited, neutral hydrogen atom fragments following oxygen 1s inner-shell excitation/ionization of gas-phase water molecules using synchrotron radiation. Striking differences to fragment ion and low-n neutral H yields are observed close to threshold. To investigate the decay pathways involved, the neutral fragments were also detected in coincidence with H+, O2 +, O+ and OH+ fragments.Keywords: Fragment ions; Gasphase; Neutral fragments; Neutral hydrogen; Water molecule; Hydrogen; Oxygen; Photoexcitation; Synchrotron radiation; Molecules201110.1088/0953-4075/44/9/0951012016-02-24