Abstract
The hyperfine structure has been resolved in the optically detected electron spin resonance (OD ESR) spectra of radical ion pairs generated by ionizing radiation at a low dopant concentration in a solid polyethylene matrix at room temperature. The different organic molecules that can capture electrons and holes were used as the dopants. The spin-lattice relaxation times T1 for radical ions of dopants were estimated to be tens of microseconds. The temperature dependence of OD ESR signal intensity indicates the diffusion-assisted mechanism of recombination of radical ion pairs in polyethylene.
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This work was supported by the Russian Science Foundation (project no. 16-13-10163).
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Verkhovlyuk, V.N., Borovkov, V.I., Bagryansky, V.A. et al. Hyperfine Structure in the OD ESR Spectra of Recombining Charge Pairs in Doped Polyethylene Matrices. Appl Magn Reson 49, 345–355 (2018). https://doi.org/10.1007/s00723-018-0978-1
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DOI: https://doi.org/10.1007/s00723-018-0978-1