Resonances and critical kinematic effects

0Citations
Citations of this article
2Readers
Mendeley users who have this article in their library.
Get full text

Abstract

The resonant interaction of the He atom with the bound states of the atom-surface potential can have a great influence on the elastic and inelastic intensities. Examples from experiment are used to illustrate how bound state resonances can be used to detect weakly coupled surface phonons by means of resonance enhancement. In addition there are a variety of focusing and surfing effects, arising from a coupling between the motion of the atomic projectile and that of the surface phonons. Several different focusing phenomena called critical kinematic effects are characterized by various tangency conditions among scan, resonance and phonon dispersion curves. Kinematical focusing, in particular, allows to determine envelopes of the surface phonon dispersion curves without resorting to time-of-flight measurements. Focused resonances provide a possible mechanism for an atom beam monochromator, while the surfing effect, allowing trapped atoms to ride a Rayleigh wave and leading to very sharp resonances, corresponds to a type of atomic polaron.

Cite

CITATION STYLE

APA

Benedek, G., & Toennies, J. P. (2018). Resonances and critical kinematic effects. In Springer Series in Surface Sciences (Vol. 63, pp. 305–336). Springer Verlag. https://doi.org/10.1007/978-3-662-56443-1_10

Register to see more suggestions

Mendeley helps you to discover research relevant for your work.

Already have an account?

Save time finding and organizing research with Mendeley

Sign up for free