Concept

Actinide

Publications associées (100)

New polynuclear U(IV)-U(V) complexes from U(IV) mediated uranyl(V) disproportionation

U(iv) promotes the disproportionation of otherwise stable uranyl(v) Schiff base complexes affording U(iv)-U(v) oxo clusters with new geometries and the first example of a U(iv)⋯UO 2 + cation-cation interaction. ...

2012

Innovative production of nuclear fuel by microwave internal gelation: Heat transfer model of falling droplets

Manuel Alexandre Pouchon, Cédric Cozzo

Based on closed packed microspheres produced by internal gelation, the Sphere-pac concept provides a safer and cleaner process and better remote production capability compared to the traditional production of nuclear fuels. Whereas classical reactor fuel r ...

Elsevier2012

Magnetic communication and reactivity of a stable homometallic cation-cation trimer of pentavalent uranyl

Marinella Mazzanti, Lucile Sylvie Danielle Chatelain

The reaction of the UO2+ precursor [(UO 2Py5)(KI2Py2)]n, with the potassium salt of the tetradentate aza β-diketiminate ligand L (L = 2-(4-tolyl)-1,3-bis(quinolyl)malondiiminate) affords the ...

2012

Testing the Elliott-Yafet spin-relaxation mechanism in KC8: A model system of biased graphene

László Forró

Temperature-dependent electron spin resonance (ESR) measurements are reported on stage-1 potassium-doped graphite, a model system of biased graphene. The ESR linewidth is nearly isotropic, and although the g factor has a sizable anisotropy, its majority is ...

2012

5f-Element complexes with a p-tert-butylcalix[4]arene bearing phosphinoyl pendant arms: Separation from rare earths and structural studies

Rosario Scopelliti, Jean-Claude Bünzli

Phosphinoylated calixarenes feature high coordination ability toward f elements and a great potentiality toward actinide/rare earth separation. Here, we report three characteristic properties of a tetra-phosphinoylated p-tert-butylcalix[4]arene, B(4)bL(4) ...

Elsevier2011

Uranium speciation and stability after reductive immobilization in sediments

Rizlan Bernier-Latmani, Elena Suvorova Buffat, Harish Veeramani, Jonathan Sharp

It has generally been assumed that the bioreduction of hexavalent uranium in groundwater systems will result in the precipitation of immobile uraninite (UO2). In order to explore the form and stability of uranium immobilized under these conditions, we intr ...

Elsevier2011

Chemistry and structure of core/double-shell nanoscale precipitates in Al-6.5Li-0.07Sc-0.02Yb (at.%)

Christian Monachon

An Al-6.3Li-0.07Sc-0.02Yb (at.%) alloy is subjected to a double-aging treatment to create nanoscale precipitates, which are studied by atom-probe tomography and transmission electron microscopy. After homogenization and quenching, Yb atoms form clusters ex ...

2011

A Compact Probe for Beta+Emitting Radiotracer Detection in Suregery, Biopsy, and Medical Diagnostics based on Silicon Photomultipliers

Edoardo Charbon, Claudio Bruschini, Marco Matter, Christian Mester

We present a new probe for radiotracer detection in vivo. The device is based on silicon photomultipliers coupled with a scintillator and wirelessly compensated for supply voltage and temperature variations. The probe is positron sensitive. ...

2011

A versatile precursor for non-aqueous neptunyl(V) chemistry

Marinella Mazzanti

The polymeric complex [(NpO2Py5)(KI 2Py2)]n is prepared from dry "NpO 2Cl" by anion exchange with potassium iodide in pyridine affording the first convenient starting material for the development of NpO 2+ coordination chemistry in anhydrous organic media. ...

2011

Morphology and stability of Au nanoclusters in HOPG nanopits of well-defined depth

Wolfgang Harbich, Michael Hugentobler, Simon Bonanni

Gold nanoparticles with a diameter comprised between 4 and 6 nm are stabilized in nanosized pits of well defined depth in highly oriented pyrolytic graphite (HOPG). These pits are produced by creation of artificial defects, followed by etching under a cont ...

2011

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