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arXiv · 1702.07865

Low-energy photoelectron transmission through aerosol overlayers

Stavros Amanatidis·Bruce L. Yoder·Ruth Signorell
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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.

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Stavros Amanatidis, Bruce L. Yoder, Ruth Signorell. 2017-02-25. Low-energy photoelectron transmission through aerosol overlayers. https://doi.org/10.1063/1.4983995

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