Ultrafast High Harmonic, Soft X-Ray Probing of Molecular Dynamics

摘要: Abstract : A three year program of experimental measurements in molecular dynamics was completed, using ultrafast soft x-rays produced by the method pulsed laser high order harmonic generation and vacuum ultraviolet synchrotron beamline at Advanced Light Source. The experiments explored both small molecules intact ionic liquid gaseous phase. Investigations probed formation ion pairs aprotic liquids vapor phase, fragmentation liquids, thermal decomposition hypergolic latter collaboration with Steven Chambreau Ghanshyam (Gammy) Vaghjiani Edwards Air Force Research Laboratory. Ionic cluster species have unique structures that involve coupling electron vibrational, i.e. nuclear, motions. Thus photofragmentation pathways are poised to undergo proton transfers (charge transfer excited electronic states) reactive chemistry unlike most when promoted low energies excitation. To understand this chemistry, these were investigated powerful methods determine novel internal will occur. Experiments also performed on superexcited states nitrogen. X-ray sources based lasers offer promise complement radiation as a convenient more widely available means for chemical analysis, which be great interest training students. goal research is study processes systems relevant material properties Force.