Hyperfine Structure in the OD ESR Spectra of Recombining Charge Pairs in Doped Polyethylene Matrices

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 electro...

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Bibliographic Details
Published in:Applied magnetic resonance 2018-04, Vol.49 (4), p.345-355
Main Authors: Verkhovlyuk, V. N., Borovkov, V. I., Bagryansky, V. A., Zikirin, S. B., Taratayko, A. I., Anisimov, O. A., Molin, Yu. N.
Format: Article
Language:English
Subjects:
Atoms and Molecules in Strong Fields
Charged particles
Dopants
Electron paramagnetic resonance
Electron spin
Hydrocarbons
Hyperfine structure
Ion pairs
Ionizing radiation
Laser Matter Interaction
Magnetic fields
Organic Chemistry
Original Paper
Physical Chemistry
Physics
Physics and Astronomy
Polyethylene
Polyethylenes
Polymers
Radiation
Radicals
Room temperature
Solid State Physics
Spectra
Spectroscopy/Spectrometry
Spin resonance
Spin-lattice relaxation
Temperature dependence
X-rays
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Summary: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 T 1 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.
ISSN:0937-9347
1613-7507
DOI:10.1007/s00723-018-0978-1