Multielectron Effects in Charge Asymmetric Molecules Induced by Asymmetric Laser Fields

作者：Tagliamonti V^*; Chen H; Gibson G N

来源：Physical Review Letters, 2013, 110(7): 073002.

DOI：10.1103/PhysRevLett.110.073002

Using a 45 fs pump pulse at 800 nm, a wave packet is created in a charge asymmetric dissociation channel of iodine, I-2(2+) -%26gt; I2+ + I0+ (2,0). As the molecule dissociates, a two-color (1 omega 2 omega) probe pulse is used to study the dynamics as a function of internuclear separation R. We find a critical region of R in which there is spatially asymmetric enhanced ionization of the (2,0) channel to a counterintuitive (1,2) channel. In this region the I0+ is ionized such that one electron is released to the continuum and another is transferred to the I2+ resulting in I0+ -%26gt; I2+ and I2+ -%26gt; I1+. At larger R, the ionization is consistent with simple one-electron ionization in a double well where I0+ -%26gt; I1+. We find qualitative agreement between simulations and experiment further highlighting the importance of multielectron effects in the strong-field ionization of molecules. DOI: 10.1103/PhysRevLett.110.073002

• 出版日期2013-2-14