Department of Physics and Astronomy: Publications and Other Research
Date of this Version
10-12-2017
Citation
PHYSICAL REVIEW A 96, 042706 (2017). DOI: 10.1103/PhysRevA.96.042706
Abstract
We investigate theoretically the use of energy-resolved ultrafast electron diffraction to image laser-driven electronic motion in atoms. A chirped laser pulse is used to transfer the valence electron of the lithium atom from the ground state to the first excited state. During this process, the electronic motion is imaged by 100-fs and 1-fs electron pulses in energy-resolved diffraction measurements. Simulations show that the angle-resolved spectra reveal the time evolution of the energy content and symmetry of the electronic state. The time-dependent diffraction patterns are further interpreted in terms of the momentum transfer. For the case of incident 1-fs electron pulses, the rapid 2s−2p quantum beat motion of the target electron is imaged as a time-dependent asymmetric oscillation of the diffraction pattern.
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Atomic, Molecular and Optical Physics Commons, Elementary Particles and Fields and String Theory Commons, Plasma and Beam Physics Commons
Comments
Copyright ©2017 American Physical Society. Used by permission./