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Bar Ilan University

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Exploring the Radical Nature of a Carbon Surface by Electron Paramagnetic Resonance and a Calibrated Gas Flow
Uri Green 1,2, Yulia Shenberger 3, Zeev Aizenshtat 1, Haim Cohen 2,4, Sharon Ruthstein 3
1Chemistry Institute, The Hebrew University of Jerusalem, 2Biological Chemistry Department, Ariel University, 3Chemistry Department, Faculty of Exact Science, Bar Ilan University, 4Chemistry Department, Ben-Gurion University

Stable radicals that are present in carbon substrates interact with paramagnetic oxygen through a Heisenberg spin exchange. This interaction can be significantly reduced under STP conditions by flowing a diamagnetic gas over the carbon system. This manuscript describes a simple method to characterize the nature of those radicals.

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