The transmission of low-energy (<1.8 eV) photoelectrons through the shell of core-shell aerosol particles is studied for liquid squalane, squalene, and di-ethyl-hexyl-sebacate 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 thicknesses (1–80 nm) shows a bi-exponential attenuation. For all substances, the damping parameter for shell thicknesses below 15 nm lies around 8 to 9 nm and is tentatively assigned to the electron attenuation length at electron kinetic energies of ≲1 eV. The significantly larger damping parameters for thick shells (>20 nm) 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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14 June 2017
Research Article|
June 13 2017
Low-energy photoelectron transmission through aerosol overlayers
Stavros Amanatidis;
Stavros Amanatidis
Department of Chemistry and Applied Biosciences, Laboratory of Physical Chemistry,
ETH Zürich
, Vladimir-Prelog-Weg 2, CH-8093 Zürich, Switzerland
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Bruce L. Yoder;
Bruce L. Yoder
Department of Chemistry and Applied Biosciences, Laboratory of Physical Chemistry,
ETH Zürich
, Vladimir-Prelog-Weg 2, CH-8093 Zürich, Switzerland
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Ruth Signorell
Ruth Signorell
a)
Department of Chemistry and Applied Biosciences, Laboratory of Physical Chemistry,
ETH Zürich
, Vladimir-Prelog-Weg 2, CH-8093 Zürich, Switzerland
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Stavros Amanatidis
Bruce L. Yoder
Ruth Signorell
a)
Department of Chemistry and Applied Biosciences, Laboratory of Physical Chemistry,
ETH Zürich
, Vladimir-Prelog-Weg 2, CH-8093 Zürich, Switzerland
a)
Author to whom correspondence should be addressed: [email protected].
J. Chem. Phys. 146, 224204 (2017)
Article history
Received:
February 25 2017
Accepted:
May 08 2017
Citation
Stavros Amanatidis, Bruce L. Yoder, Ruth Signorell; Low-energy photoelectron transmission through aerosol overlayers. J. Chem. Phys. 14 June 2017; 146 (22): 224204. https://doi.org/10.1063/1.4983995
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