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Radiation Chemical Studies with Particles of Very High Linear Energy Transfer

Abstract

CHEMICAL substances have previously been irradiated by ion beams from high energy accelerators with particles of a maximum mean linear energy transfer (LET) (− dE/dx), in the irradiated material, of 20–30 eV/Å, achieved with 4He ions of energy 1.0–1.5 MeV (refs. 1–3 and unpublished work by Burns and Reed) and with 12C ions of energy 50–100 MeV (ref. 4). The Harwell variable energy cyclotron5 can deliver ion beams that cover a very wide range in LET. We report the results of experiments done on this accelerator with 14N ions of 115 MeV and with 20Ne ions of 21 MeV. The mean LET of the latter particles in the substances used is 125 eV/Å, about four times that of any previously reported radiation chemical study with ion beams. Results on benzene and cyclohexane with others for comparison are shown in Tables 1 and 2.

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References

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BURNS, W., MARSH, W. & REED, C. Radiation Chemical Studies with Particles of Very High Linear Energy Transfer. Nature 218, 867–868 (1968). https://doi.org/10.1038/218867a0

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