Dynamics of ultrafast dissociation of hydrogenic molecules by resonant antibonding core electron excitation: Conclusions from detuning dependence of H+-kinetic energy distributions from condensed films

作者：Weimar R; Romberg R; Naydenov B; Menzel D; Feulner P^*

来源：Chemical Physics Letters, 2011, 510(1-3): 78-81.

DOI：10.1016/j.cplett.2011.05.014

The ultrafast dissociation dynamics of condensed water and ammonia by resonant core electron excitations have been studied by measuring the kinetic energy distributions of H+-ions desorbed by [N1s]4a(1) and [O1s]4a(1) excitations as a function of detuning, Delta h nu, from the center of the resonance. While the most probable ion energy varies monotonically with Delta h nu for both systems, the centers of gravity of the kinetic energy distributions are minimal at resonance and shift to higher kinetic energy with detuning to either lower or higher h nu. This behavior is explained by contributions from bond evolution processes before and after the core hole decay.

• 出版日期2011-6-24