Hydrogen peroxide yields in water radiolysis by high-energy ion beams at constant LET

Autor:	S. Bouffard, B. Hickel, G. Baldacchino, V Wasselin-Trupin
Rok vydání:	2002
Předmět:	Radiation Aqueous solution Proton Chemistry Analytical chemistry Linear energy transfer Solvated electron Ion chemistry.chemical_compound Radiolysis Irradiation Physics::Chemical Physics Hydrogen peroxide Nuclear chemistry
Zdroj:	Radiation Physics and Chemistry. 65:53-61
ISSN:	0969-806X
DOI:	10.1016/s0969-806x(01)00682-x
Popis:	The radiolytic yields of hydrogen peroxide in aqueous solution irradiated with ion beams at constant linear energy transfer (LET) values ranging from 2.5 keV/μm (30 MeV protons) to 30 keV/μm (1140 MeV carbon ions) and with 137Cs γ-rays, where the mean LET is 0.53 keV/μm, were determined. They are compared with those in the literature. The evolution of hydrogen peroxide yields is studied as a function of radical scavenger concentration. The radical-scavenging curves are discussed in terms of radical spatial distribution around the tracks. This distribution depends on both the type and the energy of radiation. This study also shows that the probing of the spatial structure for the proton track can be achieved by nitrate/methanol systems where the role of the nitrate is to protect hydrogen peroxide from the attack of hydrated electron.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::7b97f35e75131fca7c9615c717c7e186 https://doi.org/10.1016/s0969-806x(01)00682-x Zobrazit plný text záznamu Full Text from ScienceDirect