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Bulk-Sensitive Detection of the Total Ion Yield for X-ray Absorption Spectroscopy in Liquid Cells

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http://pubman.mpdl.mpg.de/cone/persons/resource/persons203286

Winter,  Bernd
Institute of Methods for Material Development, Helmholtz-Zentrum Berlin für Materialien und Energie;
Molecular Physics, Fritz Haber Institute, Max Planck Society;

http://pubman.mpdl.mpg.de/cone/persons/resource/persons104341

Velasco Vélez,  Juan
Inorganic Chemistry, Fritz Haber Institute, Max Planck Society;

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Citation

Schön, D., Golnak, R., Tesch, M. F., Winter, B., Velasco Vélez, J., Aziz, E. F., et al. (2017). Bulk-Sensitive Detection of the Total Ion Yield for X-ray Absorption Spectroscopy in Liquid Cells. The Journal of Physical Chemistry Letters, 8(20), 5136-5140. doi:10.1021/acs.jpclett.7b02381.


Cite as: http://hdl.handle.net/11858/00-001M-0000-002E-22A9-C
Abstract
Detection of ionic current with two electrodes installed in a liquid cell has been established previously as an e ff ective method, termed as total ion yield (TIY), to acquire X-ray absorption (XA) spectra of liquid solutions behind a membrane. In this study, the exact locations where TIY signals are generated are further investigated and unequivocally identi fi ed. The detected ionic current stems dominantly from the bulk solution species while only marginally from the species located at the membrane − solution interface. Such a two-electrode TIY detection in a liquid cell combines the advantages of bulk sensitivity of fl uorescence yield and high signal strength (for light elements) of electron yield, exhibiting its novel and promising role in the XA spectroscopy measurements of liquid cells.