Journal
RADIATION MEASUREMENTS
Volume 140, Issue -, Pages -Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.radmeas.2020.106467
Keywords
EPR dosimetry; Alanine dosimeter; Ionizing radiation; Paramagnetic centers; Spectra decomposition
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Funding
- Russian Foundation for Basic Research [15-58-45050 IND_a, 16-04-01276 A]
- Ministry of Education and Science of Kazakhstan [AP05135470]
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The EPR spectra of alanine dosimeters irradiated by gamma-rays and alpha-particles were analyzed to differentiate their contributions in a mixed radiation field, which may be useful for controlling dose in experiments involving neutron boron capture therapy. Different components were observed for gamma and alpha-irradiated alanine, allowing for discrimination in the mixed radiation field.
EPR spectra of alanine dosimeters irradiated by gamma-rays and by alpha- particles were measured at different microwave power. The spectra were decomposed into three components corresponding to different stable radiation-induced radicals. Different ratio of the components was obtained for gammaand alpha-irradiated alanine. The observed effect can be used for discrimination of the contribution of alphaand gamma-radiation in mixed radiation field. That may be useful for control of dose at phantom experiments with neutron boron capture therapy, performed in mixed neutron-gamma field in which alpha-particles are emitted through neutrons capture reaction with boron.
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