Related Experiment Video
Updated: Aug 7, 2026

Time Multiplexing Super Resolving Technique for Imaging from a Moving Platform
Published on: February 13, 2014
Momentum-resolved lifetimes of image-potential States on cu(100)
W Berthold1, U Höfer, P Feulner
1Fachbereich Physik und Zentrum für Materialwissenschaften, Philipps-Universität, D-35032 Marburg, Germany.
Abstract:
The dependence of the inelastic lifetime of electrons in the image-potential states of Cu(100) on their momentum parallel to the surface has been studied experimentally by means of time- and angle-resolved two-photon photoemission and theoretically by evaluating the electron self-energy within the GW approximation. The pronounced decrease of the n = 1 lifetime from 40 fs at normal emission (k(parallel) = 0) to 20 fs for k(parallel) = 0.33 A(-1) cannot be accounted for by interband decay processes to bulk states. We show that intraband transitions within the image-state band give a contribution to this decrease comparable in magnitude with the interband channel.
Related Concept Videos
Impulse-Momentum Theorem
By writing Newton's second law of motion in terms of the momentum of an object and the external force acting on it, and simultaneously using the definition of the impulse vector, it can be shown that the total impulse on an object is equal to its net...
Atomic Nuclei: Nuclear Relaxation Processes
Magnetic Moment of an Electron
Momentum And Radiation Pressure
Fermi Level Dynamics
Electron affinity in semiconductors refers to the energy gap between the minimum of its conduction band and the vacuum level and it is a critical parameter in determining how easily a semiconductor can accept additional electrons.
The work...
Principle of Linear Impulse and Momentum for a Single Particle
Delving into...

