Low-energy photoelectron transmission through aerosol overlayers
Abstract
The transmission of low-energy (<1.8eV) photoelectrons through the shell of core-shell aerosol particles is studied for liquid squalane, squalene, and DEHS shells. The photoelectrons are exclusively formed in the core of the particles by two-photon ionization. The total photoelectron yield recorded as a function of shell thickness (1-80nm) shows a bi-exponential attenuation. For all substances, the damping parameter for shell thicknesses below 15nm lies between 8 and 9nm, and is tentatively assigned to the electron attenuation length at electron kinetic energies of ~0.5-1eV. The significantly larger damping parameters for thick shells (> 20nm) are presumably a consequence of distorted core-shell structures. A first comparison of aerosol and traditional thin film overlayer methods is provided.
Keywords
Cite
@article{arxiv.1702.07865,
title = {Low-energy photoelectron transmission through aerosol overlayers},
author = {Stavros Amanatidis and Bruce L. Yoder and Ruth Signorell},
journal= {arXiv preprint arXiv:1702.07865},
year = {2017}
}