Evolution of heavy ions (He2+, H+) radiolytic yield of molecular hydrogen vs. “Track-Segment” LET values
-
Francis Crumière
,
Guillaume Blain
Abstract
Ionizing radiation’s effects onto water molecules lead to the ionization and/or the excitation of them. Then, these phenomena are followed by the formation of radicals and molecular products. The linear energy transfer (LET), which defines the energy deposition density along the radiation length, is different according to the nature of ionizing particles. Thus, the values of radiolytic yields, defined as the number of radical and molecular products formed or consumed by unit of deposited energy, evolve according to this parameter. This work consists in following the evolution of radiolytic yield of molecular hydrogen and ferric ions according to the “Track-Segment” LET of ionizing particles (protons, helions). Concerning G(Fe3+) values, it seems that the energy deposited into the Bragg peak does not play the main role for the Fe3+ radiolytic formation, whereas for the G(H2) it is the case with a component around 40% of the Bragg peak in the dihydrogen production. Therefore, as main results of this work, for high energetic Helion and Proton beams, the G(Fe3+) values, which can be used for further dosimetry studies for example during the α radiolysis experiments, and the primary g(H2) values for the Track-Segment LET, which can be used to determine the dihydrogen production by α-emitters, are published.
Acknowledgments
We acknowledge ARRONAX staffs for the efficient performing of irradiation runs onto the cyclotron facility. This work has been supported in part by a grant from the French National Agency for Research called “Investissements d’′Avenir”, Equipex ArronaxPlus n°ANR-11-EQPX-0004.
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Articles in the same Issue
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Articles in the same Issue
- Frontmatter
- Cross section measurements of 75As(α,xn)76,77,78Br and 75As(α,x)74As nuclear reactions using the monitor radionuclides 67Ga and 66Ga for beam evaluation
- U(VI) Extraction by 8-hydroxyquinoline: a comparison study in ionic liquid and in dichloromethane
- Preparation, characterization, uranium (VI) biosorption models, and conditions optimization by response surface methodology (RSM) for amidoxime-functionalized marine fungus materials
- β-Zeolite modified by ethylenediamine for sorption of Th(IV)
- Assessment of surface reactivity of thorium oxide in conditions close to chemical equilibrium by isotope exchange 229Th/232Th method
- Evolution of heavy ions (He2+, H+) radiolytic yield of molecular hydrogen vs. “Track-Segment” LET values
- Radiation induced environmental remediation of Cr(VI) heavy metal in aerated neutral solution under simulated industrial effluent
- Soil depth profiles and radiological assessment of natural radionuclides in forest ecosystem
