Profile measurements of helium implanted in UO2 sintered pellets by using the 3He(d,α)1H nuclear reaction analysis technique

Sauvage, Thierry; Erramli, H.; Guilbert, S.; Vincent, Laëtitia; Barthe, M.F.; Desgardin, P.; Blondiaux, G.; Corbel, C.; Piron, J.P.; Labohm, F.; Veen, A. van

doi:10.1016/j.jnucmat.2004.02.002

Cited by 30 publications

(12 citation statements)

References 18 publications

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“…The details of the method (experimental set-up, cross section data, energy calibration of the detectors and experimental data analysis) are described in [8,9].…”

Section: Helium Lateral and Depth Distributionmentioning

confidence: 99%

He migration in implanted UO2 sintered disks

Guilbert

Sauvage

Garcia

et al. 2004

Journal of Nuclear Materials

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“…The details of the method (experimental set-up, cross section data, energy calibration of the detectors and experimental data analysis) are described in [8,9].…”

Section: Helium Lateral and Depth Distributionmentioning

confidence: 99%

He migration in implanted UO2 sintered disks

Guilbert

Sauvage

Garcia

et al. 2004

Journal of Nuclear Materials

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“…The presence of defects is barely detectable by positron annihilation spectroscopy [4]. However this thermal treatment reveals furrows along the grain boundaries several hundreds of nm deep [5]. Samples were additionally polished using a 50 nm silica suspension to restore the planarity of their surface (set B).…”

Section: Methodsmentioning

confidence: 99%

Surface Blistering and Flaking of Sintered Uranium Dioxide Samples under High Dose Gas Implantation and Annealing

Martin

Carlot²,

Desgardin

et al. 2012

DDF

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High helium contents will be generated within minor actinide doped uranium dioxide blankets which could be used in fourth generation reactors. In this framework, it is essential to improve our understanding of the type of damage which a pellet could incur as a result of extensive helium build-up. This paper is an attempt at tackling this issue. Sintered uranium dioxide disks have been implanted with helium ions then annealed at various temperatures. Above a concentration of 0.4 at.% and above 1000°C, optical images of the sample surface revealed swollen grains and extensive areas which have exfoliated. Nuclear reaction microanalyses and atomic force microscopy observations were performed to demonstrate that helium has substantially precipitated within the swollen grains. Massive precipitation of the gas leads under these conditions to sample surface blistering which appears to precede flaking. Deuterium ion irradiations have also been performed at ambient and a direct flaking of the sample surface was observed, but for this phenomenon to be observed required much higher doses than in the He study, indicating that temperature could be an essential ingredient for gas to migrate and cause extensive precipitation. Such phenomena could possibly lead to degradation of the fuel.

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“…The method involves analysing the a particle energy spectrum, usually with a 625 keV deuteron beam approximately 1 nA in intensity and covering an area of roughly 1 mm 2 . This however requires detecting in coincidence both reaction products as described by Sauvage et al [11] in order to eliminate particles produced mainly as a result of the 16 O(d,p) and 16 O(d,a) reactions.…”

Section: Helium Depth Profilingmentioning

confidence: 99%