Ultrafast decay of superexcited cΣu−4nlσgv=0,1 states of O2 probed with femtosecond photoelectron spectroscopy
作者： Benjamin Doughty , Christine J. Koh , Louis H. Haber , Stephen R. Leone
DOI: 10.1063/1.4722924
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摘要: Neutral superexcited states in molecular oxygen converging to the O2+cΣu−4 ion state are excited and probed with femtosecond time-resolved photoelectron spectroscopy investigate predissociation autoionization relaxation channels as decay. The cΣu−44sσgv=0, cΣu−44sσgv=1, cΣu−43dσgv=1 prepared pulsed high-harmonic radiation centered at 23.10 eV. A time-delayed 805 nm laser pulse is used probe neutral atomic fragments by ionization; ejected photoelectrons from these spectrally resolved a velocity map imaging spectrometer. Three O* atom products identified spectrum 4d1DJ°3, 4p1PJ°5 3d1DJ°3 fragments. Additionally, several features assigned photoionization of transiently populated states. Using principles core dissociation model, measured correlated th...
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