Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
9757069 | Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy | 2005 | 7 Pages |
Abstract
Electron paramagnetic resonance (EPR) studies of X-irradiated lithium dithionate, Li2S2O6·2H2O, doped with Ni and Rh have shown that these impurities enhance the yield of radicals formed by X-irradiation at room temperature. The signal in the doped samples, measured peak-to-peak of the single EPR derivative line attributed to the SO3â anion was about 3-4 times that of the pure lithium dithionate and more than 10 times stronger than the alanine signal. These impurities also shortened the spin-lattice relaxation time, T1, which gives the possibility to measure the doped samples at a higher microwave power. This implies that sensitivity could be further enhanced in the already sensitive EPR dosimeter material lithium dithionate.
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Authors
H. Gustafsson, M. Danilczuk, M.D. Sastry, A. Lund, E. Lund,