Analysis of matrix nuclei spin flip satellite lines in EPR spectra: Application to trapped hydrogen atoms |
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Authors: | M. Bowman Larry Kevan R.N. Schwartz |
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Affiliation: | Department of Chemistry, Wayne State University, Detroit, Michigan 48202, USA;Department of Chemistry, University of Illinois at Chicago Circle, Chicago, Illinois 60680, USA |
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Abstract: | The relative intensities and energy separation of allowed EPR lines of a paramagnetic species and partially forbidden spin flip satellite lines due to dipole-dipole coupling between the paramagnetic species and the matrix nuclei have been analyzed in a new way. The analysis allows one to determine both the distance to and the number of matrix nuclei that contribute to a given satellite transition. For hydrogen atoms trapped in a gamma-irradiated sulphuric acid glass at 77 K the analysis indicates that interaction occurs with four matrix protons at a distance of 2.15 Å. For trapped hydrogen atoms in phosphoric acid glass the analysis indicates interaction with four matrix protons at 2.37 Å. |
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