Thermal evolution of the vacancy defects distribution in 1 MeV helium implanted sintered UO2

H. Labrim; M. F. Barthe; P. Desgardin; T. Sauvage; C. Corbel; G. Blondiaux; J. P. Piron

doi:10.1016/j.nimb.2007.04.059

Thermal evolution of the vacancy defects distribution in 1 MeV helium implanted sintered UO₂

H. Labrim
, M. F. Barthe
, P. Desgardin
, T. Sauvage
, C. Corbel
, G. Blondiaux
, J. P. Piron

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

Abstract

Evolution of vacancy defects as a function of temperature was studied by positron annihilation spectroscopy in 1 MeV helium implanted sintered UO₂ disks. A slow positron beam coupled with a Doppler broadening spectrometer was used to measure the low and high momentum annihilation fractions, S and W respectively, as a function of positron energy E in UO₂ disks implanted at the fluence of 1 × 10^{16 3}He cm^-2 before and after annealing. The S(E) and W(E) behaviours change with the annealing temperature in the range from 160 to 1300 °C indicating that the vacancy defects distribution evolves. The positron trapping rate at vacancy defects decreases with the increasing annealing temperature with two stages around 250 °C and 800 °C. We will discuss the phenomena that could explain these annealing stages in comparison with other positron annihilation spectroscopy results and with the ³He depth profile evolution as the function of temperature measured by Nuclear Reaction Analysis.

Original language	English
Pages (from-to)	883-887
Number of pages	5
Journal	Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms
Volume	261
Issue number	1-2 SPEC. ISS.
DOIs	https://doi.org/10.1016/j.nimb.2007.04.059
Publication status	Published - 1 Aug 2007

Keywords

Doppler broadening
Helium implantation
Slow positron beam
Thermal evolution
Uranium dioxide
Vacancy defects

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10.1016/j.nimb.2007.04.059

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Labrim, H., Barthe, M. F., Desgardin, P., Sauvage, T., Corbel, C., Blondiaux, G., & Piron, J. P. (2007). Thermal evolution of the vacancy defects distribution in 1 MeV helium implanted sintered UO₂. Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms, 261(1-2 SPEC. ISS.), 883-887. https://doi.org/10.1016/j.nimb.2007.04.059

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title = "Thermal evolution of the vacancy defects distribution in 1 MeV helium implanted sintered UO2",

abstract = "Evolution of vacancy defects as a function of temperature was studied by positron annihilation spectroscopy in 1 MeV helium implanted sintered UO2 disks. A slow positron beam coupled with a Doppler broadening spectrometer was used to measure the low and high momentum annihilation fractions, S and W respectively, as a function of positron energy E in UO2 disks implanted at the fluence of 1 × 1016 3He cm-2 before and after annealing. The S(E) and W(E) behaviours change with the annealing temperature in the range from 160 to 1300 °C indicating that the vacancy defects distribution evolves. The positron trapping rate at vacancy defects decreases with the increasing annealing temperature with two stages around 250 °C and 800 °C. We will discuss the phenomena that could explain these annealing stages in comparison with other positron annihilation spectroscopy results and with the 3He depth profile evolution as the function of temperature measured by Nuclear Reaction Analysis.",

keywords = "Doppler broadening, Helium implantation, Slow positron beam, Thermal evolution, Uranium dioxide, Vacancy defects",

author = "H. Labrim and Barthe, \{M. F.\} and P. Desgardin and T. Sauvage and C. Corbel and G. Blondiaux and Piron, \{J. P.\}",

year = "2007",

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doi = "10.1016/j.nimb.2007.04.059",

language = "English",

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Labrim, H, Barthe, MF, Desgardin, P, Sauvage, T, Corbel, C, Blondiaux, G & Piron, JP 2007, 'Thermal evolution of the vacancy defects distribution in 1 MeV helium implanted sintered UO₂', Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms, vol. 261, no. 1-2 SPEC. ISS., pp. 883-887. https://doi.org/10.1016/j.nimb.2007.04.059

Thermal evolution of the vacancy defects distribution in 1 MeV helium implanted sintered UO₂. / Labrim, H.; Barthe, M. F.; Desgardin, P. et al.
In: Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms, Vol. 261, No. 1-2 SPEC. ISS., 01.08.2007, p. 883-887.

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

TY - JOUR

T1 - Thermal evolution of the vacancy defects distribution in 1 MeV helium implanted sintered UO2

AU - Labrim, H.

AU - Barthe, M. F.

AU - Desgardin, P.

AU - Sauvage, T.

AU - Corbel, C.

AU - Blondiaux, G.

AU - Piron, J. P.

PY - 2007/8/1

Y1 - 2007/8/1

N2 - Evolution of vacancy defects as a function of temperature was studied by positron annihilation spectroscopy in 1 MeV helium implanted sintered UO2 disks. A slow positron beam coupled with a Doppler broadening spectrometer was used to measure the low and high momentum annihilation fractions, S and W respectively, as a function of positron energy E in UO2 disks implanted at the fluence of 1 × 1016 3He cm-2 before and after annealing. The S(E) and W(E) behaviours change with the annealing temperature in the range from 160 to 1300 °C indicating that the vacancy defects distribution evolves. The positron trapping rate at vacancy defects decreases with the increasing annealing temperature with two stages around 250 °C and 800 °C. We will discuss the phenomena that could explain these annealing stages in comparison with other positron annihilation spectroscopy results and with the 3He depth profile evolution as the function of temperature measured by Nuclear Reaction Analysis.

AB - Evolution of vacancy defects as a function of temperature was studied by positron annihilation spectroscopy in 1 MeV helium implanted sintered UO2 disks. A slow positron beam coupled with a Doppler broadening spectrometer was used to measure the low and high momentum annihilation fractions, S and W respectively, as a function of positron energy E in UO2 disks implanted at the fluence of 1 × 1016 3He cm-2 before and after annealing. The S(E) and W(E) behaviours change with the annealing temperature in the range from 160 to 1300 °C indicating that the vacancy defects distribution evolves. The positron trapping rate at vacancy defects decreases with the increasing annealing temperature with two stages around 250 °C and 800 °C. We will discuss the phenomena that could explain these annealing stages in comparison with other positron annihilation spectroscopy results and with the 3He depth profile evolution as the function of temperature measured by Nuclear Reaction Analysis.

KW - Doppler broadening

KW - Helium implantation

KW - Slow positron beam

KW - Thermal evolution

KW - Uranium dioxide

KW - Vacancy defects

UR - https://www.scopus.com/pages/publications/34447304365

U2 - 10.1016/j.nimb.2007.04.059

DO - 10.1016/j.nimb.2007.04.059

M3 - Article

AN - SCOPUS:34447304365

SN - 0168-583X

VL - 261

SP - 883

EP - 887

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 SPEC. ISS.

ER -

Thermal evolution of the vacancy defects distribution in 1 MeV helium implanted sintered UO₂

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Keywords

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