Irradiation effects in simplified nuclear waste glasses

Bruno Boizot; Nadège Ollier; Florent Olivier; Guillaume Petite; Dominique Ghaleb; Euguenia Malchukova

doi:10.1016/j.nimb.2005.06.105

Irradiation effects in simplified nuclear waste glasses

Bruno Boizot, Nadège Ollier, Florent Olivier, Guillaume Petite, Dominique Ghaleb, Euguenia Malchukova

Research output: Contribution to journal › Article › peer-review

Abstract

The structural evolution of simplified nuclear waste glasses under β-irradiation (2.5 MeV) has been studied up to cumulated doses of the order of 10⁹ Gy. A rapid saturation of the point defect creation is observed at a very low level (in large contrast with what is observed on pure silica). At large doses, we also observe an increase of the polymerization of the vitreous lattice, and the appearance of dissolved molecular oxygen, which however does not coalesce into bubbles. These evolutions can be linked with the diffusion of alkaline ions in the material. The effects of the glass composition (mixed alkali effect, specific role of some particular cations, which are known to block the structural evolution) have been also investigated in order to study the possibility of decreasing alkaline mobility under irradiation.

Original language	English
Pages (from-to)	146-151
Number of pages	6
Journal	Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms
Volume	240
Issue number	1-2
DOIs	https://doi.org/10.1016/j.nimb.2005.06.105
Publication status	Published - 1 Oct 2005
Externally published	Yes

Keywords

Irradiation
Nuclear waste glasses
Structural evolutions

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10.1016/j.nimb.2005.06.105

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title = "Irradiation effects in simplified nuclear waste glasses",

abstract = "The structural evolution of simplified nuclear waste glasses under β-irradiation (2.5 MeV) has been studied up to cumulated doses of the order of 109 Gy. A rapid saturation of the point defect creation is observed at a very low level (in large contrast with what is observed on pure silica). At large doses, we also observe an increase of the polymerization of the vitreous lattice, and the appearance of dissolved molecular oxygen, which however does not coalesce into bubbles. These evolutions can be linked with the diffusion of alkaline ions in the material. The effects of the glass composition (mixed alkali effect, specific role of some particular cations, which are known to block the structural evolution) have been also investigated in order to study the possibility of decreasing alkaline mobility under irradiation.",

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T1 - Irradiation effects in simplified nuclear waste glasses

AU - Boizot, Bruno

AU - Ollier, Nadège

AU - Olivier, Florent

AU - Petite, Guillaume

AU - Ghaleb, Dominique

AU - Malchukova, Euguenia

PY - 2005/10/1

Y1 - 2005/10/1

N2 - The structural evolution of simplified nuclear waste glasses under β-irradiation (2.5 MeV) has been studied up to cumulated doses of the order of 109 Gy. A rapid saturation of the point defect creation is observed at a very low level (in large contrast with what is observed on pure silica). At large doses, we also observe an increase of the polymerization of the vitreous lattice, and the appearance of dissolved molecular oxygen, which however does not coalesce into bubbles. These evolutions can be linked with the diffusion of alkaline ions in the material. The effects of the glass composition (mixed alkali effect, specific role of some particular cations, which are known to block the structural evolution) have been also investigated in order to study the possibility of decreasing alkaline mobility under irradiation.

AB - The structural evolution of simplified nuclear waste glasses under β-irradiation (2.5 MeV) has been studied up to cumulated doses of the order of 109 Gy. A rapid saturation of the point defect creation is observed at a very low level (in large contrast with what is observed on pure silica). At large doses, we also observe an increase of the polymerization of the vitreous lattice, and the appearance of dissolved molecular oxygen, which however does not coalesce into bubbles. These evolutions can be linked with the diffusion of alkaline ions in the material. The effects of the glass composition (mixed alkali effect, specific role of some particular cations, which are known to block the structural evolution) have been also investigated in order to study the possibility of decreasing alkaline mobility under irradiation.

KW - Irradiation

KW - Nuclear waste glasses

KW - Structural evolutions

U2 - 10.1016/j.nimb.2005.06.105

DO - 10.1016/j.nimb.2005.06.105

M3 - Article

AN - SCOPUS:27344439949

SN - 0168-583X

VL - 240

SP - 146

EP - 151

JO - Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms

JF - Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms

IS - 1-2

ER -

Irradiation effects in simplified nuclear waste glasses

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Keywords

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