title: Detecting electron motion in atoms and molecules.
abstract: The detection of spatial and temporal electronic motion by scattering of subfemtosecond pulses of 10 keV electrons from coherent superpositions of electronic states of both H and T2(+) is investigated. For the H atom, we predict changes in the diffraction images that reflect the time-dependent effective radius of the electronic charge density. For an aligned T2(+) molecule, the diffraction image changes reflect the time-dependent localization or delocalization of the electronic charge density.
authors.affiliation: Department of Physics and Astronomy, The University of Nebraska, Lincoln, Nebraska 68588-0299, USA.
authors.forename: Hua-Chieh
authors.initials: HC
authors.lastname: Shao
authors.forename: Anthony F
authors.initials: AF
authors.lastname: Starace