Hydrogen production during the irradiation of gaseous organic compounds: Advantage of an extracted beam

Pichon, Caroline; Chevarier, A.; Duclot, J.C.; Gardon, A.; Marchand, Jean-Claude; Millard-Pinard, N.; Peaucelle, C.; Pijolat, Michèle; Valdivieso, Françoise

doi:10.1016/j.nimb.2005.06.229

Cited by 3 publications

(3 citation statements)

References 8 publications

(6 reference statements)

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“…The characteristics of this extracted beam line, irradiation conditions and analysis of irradiated gases are described in detail in a previous work [18]. The mixtures were irradiated at a dose rate of 50 MGy/h, the total irradiation doses applied being in the range 0.6-3.6 MGy.…”

Section: Irradiation Experimentsmentioning

confidence: 99%

Trapping of radiolytic hydrogen by amorphous cobalt oxysulfide

Loussot¹,

Pichon²,

Afanasiev³

et al. 2006

Journal of Nuclear Materials

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Section: Irradiation Experimentsmentioning

confidence: 99%

Trapping of radiolytic hydrogen by amorphous cobalt oxysulfide

Loussot¹,

Pichon²,

Afanasiev³

et al. 2006

Journal of Nuclear Materials

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“…The characteristics of this extracted beam line and analysis conditions of irradiated gases are described in detail in a previous work [3]. The studied system is irradiated at room temperature with a dose rate of 50 MGy h À1 , the total irradiation doses applied being in the range of 0.6-3.6 MGy.…”

Section: Extracted Beam Line and Irradiation Cellmentioning

confidence: 99%

“…In a previous work [3], propane radiolysis induced by a proton beam has been studied. It has been shown that hydrogen and hydrocarbons (CH 4 , C 2 H 4 , C 2 H 6 , C 3 H 6 , C 4 H 8 , C 4 H 10 and higher hydrocarbons) were formed during irradiation of gaseous propane.…”

Section: Propane Radiolysismentioning

confidence: 99%

Effect of cobalt hydroxo-sulphide on organic material radiolysis

Pichon

Millard-Pinard

Valdivieso

et al. 2007

Journal of Nuclear Materials

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Modifications of oxidized Zircaloy-4 surface in contact with radiolysed wet air

Guipponi¹,

Millard-Pinard²,

Bérerd³

et al. 2012

Nuclear Instruments and Methods in Physics Research Section B:

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International audienceIn the framework of radioactive waste geological disposal, the long term evolution of the nuclear wastes packages and the release of the radionuclides from the wastes have to be studied. Regarding compacted wastes (cladding tubes) coming from reprocessing of spent fuel, the Zircaloy-4 (zirconium alloy) cladding tubes have been activated and oxidized in reactors. In the disposal, the radioactive waste is exposed to humid air in a first phase and to water after the resaturation phase. In order to better assess the degradation process of these nuclear waste package, the influence of wet air proton radiolysis on the behavior of surface oxidized Zircaloy-4 has been investigated. Radiolysis experiments were performed using an irradiation cell which is associated to an extracted beam. Samples are exposed to wet air, under and without radiolysis, during 12 and 24 h. The water partial pressure has been fixed at 6 and 50 mbar in order to have, respectively, localized adsorbed water molecules and a thin film of adsorbed water. Before and after each treatment, sample surfaces were characterized by X-ray Photoelectron Spectroscopy (XPS) in order to identify the elements at the topmost surface of the solid. The wet air radiolysis causes changes at the surface of oxidized Zircaloy-4 and influences the corrosion phenomenon. Indeed, an enrichment of tin and the presence of nitrogen species were observed. It could be due to the formation of tritin(II) tetrahydroxide dinitrate and a Zr4+ tetramer on the topmost oxide surface

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Hydrogen production during the irradiation of gaseous organic compounds: Advantage of an extracted beam

Cited by 3 publications

References 8 publications

Trapping of radiolytic hydrogen by amorphous cobalt oxysulfide

Trapping of radiolytic hydrogen by amorphous cobalt oxysulfide

Effect of cobalt hydroxo-sulphide on organic material radiolysis

Modifications of oxidized Zircaloy-4 surface in contact with radiolysed wet air

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