Ionization of atoms and molecules in a strong two-color field. (August 2015)

• Record Type: Journal Article
• Authors: Mi, Yonghao; Camus, Nicolas; Laux, Martin; Fechner, Lutz; Moshammer, Robert; Pfeifer, Thomas
• Is Part Of: Journal of physics. Number 635(2015)
• Publication Date: 2015-08
• Subjects: Physics -- Congresses; 530.5
• DOI: 10.1088/1742-6596/635/9/092093
• Languages: English
• ISSNs: 1742-6588

Abstract

Synopsis: We experimentally investigated the asymmetry of photo-ion and photoelectron momentum spectra of argon and nitrogen by ionizing an argon-nitrogen gas mixture in a strong two-color (400 nm + 800 nm) laser field. By changing the time delay between the 400 nm laser pulse and the 800 nm pulse, the fan-like stripes in low-energy electron momentum shift from negative momentum to positive for both argon and nitrogen. A clear difference of asymmetric electron emission between Ar and N2 is observed.