Characterization of radioactive materials using the MARS beamline at the synchrotron SOLEIL

Sitaud, B.; Solari, Pier Lorenzo; Schlutig, Sandrine; Llorens, Isabelle; Hermange, Hervé

doi:10.1016/j.jnucmat.2011.08.017

Cited by 75 publications

(67 citation statements)

References 5 publications

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“…Measurements were carried out on SOLEIL bendingmagnet MARS beamline dedicated to the study of radioactive samples [18,21]. The storage ring operates in top-up mode at 450 mA (energy: 2.75 GeV).…”

Section: Xas Measurementsmentioning

confidence: 99%

“…XAS technique was chosen to characterize the local environment of the three different species Zr, Pu and Cm in the glasses, inactive and radioactive ones. Experiments were performed on the Multi Analysis Radioactive Samples (MARS) beamline at SOLEIL synchrotron (France) [18]. This beamline dedicated to radioactive materials, accepts at present samples with activities less or equal than 2.10 8 Bq, a threshold in the range of our studied glasses.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

XANES analysis of a Cm-doped borosilicate glass under $$\alpha $$ α -self-irradiation effects

Bouty

Ramond²,

Solari

et al. 2016

J Mater Sci

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Industrial borosilicate glasses containing fission products and minor actinides can be subjected to structural damage caused mainly by a-self-irradiation effects. In this field of glasses under extreme conditions, we present an X-ray Absorption Near-Edge Structure investigation of two six-oxide borosilicate curium-doped glasses (based on the International Simplified Glass (ISG) composition). The first sample is an 8-year ISG damaged glass, which has already accumulated an a-decay dose greater than 6.10 18 a g À1 , a value corresponding to a damaged but stabilized structural state. The second sample results from annealing of the latter ISG damaged glass. Three species, Cm, Pu and Zr were probed at L 3 -edge, L 3 -edge and K-edge, respectively. From the experimental results, Cm and Pu species appear respectively in ?3 and ?4 oxidation states in both glasses. No Cm local environment changes are observed. In contrast, a small variation in Pu local environment appears between the damaged and annealed glasses, reflecting a possible coordination variation or Pu-Zr substitution. A more drastic effect appears for Zr local environment, where a sevenfold coordinated site grows over time under a-self-irradiation effects, at the expense of the initial major sixfold site of symmetry. Moreover, annealing the damaged glass does not permit to retrieve a similar structural state to the one of a just melted curium-doped ISG.

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Section: Xas Measurementsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

XANES analysis of a Cm-doped borosilicate glass under $$\alpha $$ α -self-irradiation effects

Bouty

Ramond²,

Solari

et al. 2016

J Mater Sci

View full text Add to dashboard Cite

show abstract

“…The Beamline MAtière Radioactive à Soleil (MARS; Ref. 18), as its name implies located at Soleil, Gif-sur-Yvette, France is conceived to perform SR studies on highly active material but has not been successful in obtaining an appropriate license and will not be expected to obtain one before 2013. Presently, investigations on materials with activities below the legal exemption limit are allowed as is possible at a number of other beamlines.…”

Section: Introductionmentioning

confidence: 99%

The INE-Beamline for actinide science at ANKA

Rothe

Butorin

Dardenne³

et al. 2012

Review of Scientific Instruments

106

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Since its inauguration in 2005, the INE-Beamline for actinide research at the synchrotron source ANKA (KIT North Campus) provides dedicated instrumentation for x-ray spectroscopic characterization of actinide samples and other radioactive materials. R&D work at the beamline focuses on various aspects of nuclear waste disposal within INE's mission to provide the scientific basis for assessing long-term safety of a final nuclear waste repository. The INE-Beamline is accessible for the actinide and radiochemistry community through the ANKA proposal system and the European Union Integrated Infrastructure Initiative ACTINET-I3. Experiments with activities up to 1 × 10(+6) times the European exemption limit are feasible within a safe but flexible containment concept. Measurements with monochromatic radiation are performed at photon energies varying between ~2.1 keV (P K-edge) and ~25 keV (Pd K-edge), including the lanthanide L-edges and the actinide M- and L3-edges up to Cf. The close proximity of the INE-Beamline to INE controlled area labs offers infrastructure unique in Europe for the spectroscopic and microscopic characterization of actinide samples. The modular beamline design enables sufficient flexibility to adapt sample environments and detection systems to many scientific questions. The well-established bulk techniques x-ray absorption fine structure (XAFS) spectroscopy in transmission and fluorescence mode have been augmented by advanced methods using a microfocused beam, including (confocal) XAFS/x-ray fluorescence detection and a combination of (micro-)XAFS and (micro-)x-ray diffraction. Additional instrumentation for high energy-resolution x-ray emission spectroscopy has been successfully developed and tested.

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“…Under α-irradiation, pertechnetate is reduced to Tc(V) in 13 SO 4 , results show the formation of SO 2 (g), H 2 (g), and H 2 O 2 . The reduction mechanisms of Tc(VII) to Tc(V) were discussed, and the reduction of Tc(VII) by SO 2 gas according to Tc(VII) + SO 2 + 2H 2 O → Tc(V) + 4H + + SO 4 2− was proposed.…”

Section: Discussionmentioning

confidence: 95%

Behavior of Heptavalent Technetium in Sulfuric Acid under α-Irradiation: Structural Determination of Technetium Sulfate Complexes by X-ray Absorption Spectroscopy and First Principles Calculations

et al. 2014

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The effect of α-radiolysis on the behavior of heptavalent technetium has been investigated in 13 and 18 M H2SO4. Irradiation experiments were performed using α-particles ((4)He(2+), E = 68 MeV) generated by the ARRONAX cyclotron. UV-visible and X-ray absorption fine structure spectroscopic studies indicate that Tc(VII) is reduced to Tc(V) under α-irradiation. Extended X-ray absorption fine structure (EXAFS) spectroscopy measurements are consistent with the presence of mononuclear technetium sulfate complexes. Experimental results and density functional calculations show the formation of [TcO(HSO4)3(H2O)(OH)](-) and/or [TcO(HSO4)3(H2O)2] and [Tc(HSO4)3(SO4)(H2O)] and/or [Tc(HSO4)3(SO4)(OH)](-) for 13 and 18 M H2SO4, respectively.

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Characterization of radioactive materials using the MARS beamline at the synchrotron SOLEIL

Cited by 75 publications

References 5 publications

XANES analysis of a Cm-doped borosilicate glass under $$\alpha $$ α -self-irradiation effects

XANES analysis of a Cm-doped borosilicate glass under $$\alpha $$ α -self-irradiation effects

The INE-Beamline for actinide science at ANKA

Behavior of Heptavalent Technetium in Sulfuric Acid under α-Irradiation: Structural Determination of Technetium Sulfate Complexes by X-ray Absorption Spectroscopy and First Principles Calculations

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