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Paramagnetic Resonance in Carbonaceous Solids

Abstract

FOLLOWING the discovery1,2 of a paramagnetic resonance absorption of high intensity, and narrow width, in charcoals and other low-temperature carbons, a systematic survey of different coal and carbonized coal samples has been undertaken, to determine what factors affect the magnitude of the absorption. The samples were prepared at Leatherhead and the measurements have been made at Southampton using frequencies of 24,000 Mc./s., 9,000 Mc/s. and 40 Mc./s.

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References

  1. Ingram, D. J. E., and Bennett, J. E., Phil. Mag., 45, 545 (1954).

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  2. Bennett, J. E., Ingram, D. J. E., and Tapley, J. G., Report on Bristol Conference “Defects in Solid State” (Physical Society 1954).

  3. Castle, J. G., Phys. Rev., 92, 1063 (1953); 94, 1410 (1954); 95, 846 (1954).

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  4. Henning, F. R., Smaller, B., and Yasairis, E. L., Phys. Rev., 95, 1088 (1954).

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INGRAM, D., TAPLEY, J., JACKSON, R. et al. Paramagnetic Resonance in Carbonaceous Solids. Nature 174, 797–798 (1954). https://doi.org/10.1038/174797a0

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