Probing Molecular Dynamics at Attosecond Resolution with Femtosecond Laser Pulses
X. M. Tong, Z. X. Zhao, C. D. Lin
Abstract
The kinetic energy distribution of D+ ions resulting from the interaction of a femtosecond laser pulse with D2 molecules is calculated based on the rescattering model. From analyzing the molecular dynamics, it is shown that the recollision time between the ionized electron and the D2+ ion can be read from the D+ kinetic energy peaks to attosecond accuracy. We further suggest that more precise reading of the clock can be achieved by using shorter fs laser pulses (about 15fs).
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