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  • Title: The effects of boron on the electron paramagnetic resonance spectra of alanine irradiated with thermal neutrons.
    Author: Ciesielski B, Wielopolski L.
    Journal: Radiat Res; 1995 Oct; 144(1):59-63. PubMed ID: 7568772.
    Abstract:
    The effects of boric acid admixture on the intensity and line structure of EPR spectra of free radicals produced in alanine by thermal neutrons are presented. The EPR signal enhancement, up to a factor of 40 depending on the boron concentration, is related to additional energy deposition in alanine crystals by the disintegration products resulting from the capture of a thermal neutron by boron, 10B(n,alpha)7Li. The changes in the shape of the EPR spectra observed by changing the microwave power are due to the differences in the microwave power saturation of the free radicals produced by a low-LET radiation and those produced by the high-LET components of the radiation after the neutron capture reaction.
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