Recollision-induced dissociation and ionization of oxygen in few-cycle laser fields

Journal Article · Tue Mar 15 04:00:00 EDT 2011 · Physical Review. A

DOI:https://doi.org/10.1103/PHYSREVA.83.035403· OSTI ID:21541407

Xianrong, Liu; Chengyin, Wu; Yunquan, Liu; Deng, Yongkai; Gong, Qihuang ^[1]; Zhifeng, Wu ^[1]

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1. State Key Laboratory for Mesoscopic Physics and Department of Physics, Peking University, Beijing 100871 (China)

A correlated pair of an electron and its parent ion is generated when a molecule is irradiated by an intense laser pulse. The accelerated electron will be driven back when the laser's electric field changes its sign and it may collide with the parent ion. In the present work, we experimentally study the electron-ion recollision process of oxygen in few-cycle laser fields. Two reaction channels are identified through coincident measurements. One is initiated by the recollision-induced dissociation and the other by the recollision-induced ionization. Angular distributions of the atomic ions are also measured for these two reaction channels. Although the angular distributions are mainly determined by angle-dependent ionization rates of molecules, we find that they are also affected by the symmetry of the recollision-related molecular orbitals.

• OSTI ID: 21541407
• Journal Information: Physical Review. A, Journal Name: Physical Review. A Journal Issue: 3 Vol. 83; ISSN 1050-2947; ISSN PLRAAN
• Country of Publication: United States
• Language: English

Related Subjects

74 ATOMIC AND MOLECULAR PHYSICS
ANGULAR DISTRIBUTION
ATOMIC IONS
CHARGED PARTICLES
DISSOCIATION
DISTRIBUTION
ELECTRIC FIELDS
ELECTROMAGNETIC RADIATION
ELECTRONS
ELEMENTARY PARTICLES
ELEMENTS
FERMIONS
INTERACTIONS
IONIZATION
IONS
LASER RADIATION
LEPTONS
MOLECULES
NONMETALS
OXYGEN
PAIR PRODUCTION
PARTICLE PRODUCTION
PULSES
RADIATIONS
SYMMETRY