Search for dissertations about: "Actinide"

Showing result 1 - 5 of 41 swedish dissertations containing the word Actinide.

  2. 1. Theoretical Actinide Chemistry – Methods and Models

    Author : Pernilla Wåhlin; Ulf Wahlgren; Luis Seijo; Stockholms universitet; []
    Keywords : Actinide; Quantum chemistry; Wave function; Density functional theory; Solvent models; Water exchange; Molecular configurations; Multi-reference density functional method; teoretisk fysik; Theoretical Physics;

    Abstract : The chemistry of actinides in aqueous solution is important, and it is essential to build adequate conceptual models and develop methods applicable for actinide systems. The complex electronic structure makes benchmarking necessary. READ MORE

  4. 2. Studies of extraction and separation of Am(III) and Eu(III) using synergistic extraction with nitrogen coordinating ligands and 2-bromodecanoic acid

    Author : Åsa Enarsson; Chalmers tekniska högskola; []
    Keywords : transmutation; oligopyridines; Am; lathanide; solvent extraction; basicity; actinide; separation; synergism; triazines; Eu;

    Abstract : .... READ MORE

  5. 3. Solvent Extraction Studies with Substituted Malonamides and Oligopyridines Influence of Structure and Chemical Properties on the Extraction Ability of Trivalent Actinides and Lanthanides

    Author : Lena Spjuth; Chalmers tekniska högskola; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; lanthanide; malonamides; synergism; transmutation; oligopyridines; separation; solvent extraction; actinide; basicity;

    Abstract : Separation and transmutation of spent nuclear fuel has been considered as a complement to direct disposal in a deep geological repository. The time needed for the waste to decay to natural background levels can be drastically decreased if the long-lived radionuclides, mainly the actinides, in the spent nuclear fuel are separated and transmuted to short-lived or stable nuclides. READ MORE

  6. 4. Why Faster is Better : On Minor Actinide Transmutation in Hard Neutron

    Author : Daniel Westlén; Jan Wallenius; Marc Delpech; KTH; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; nuclear physics; nuclear engineering; Atomic physics; Atomfysik;

    Abstract : In this thesis, options for efficient transmutation of transuranium elements are discussed. The focus is on plutonium, americium and curium mainly because of their long-term contribution to the radiotoxicity of spent nuclear fuel. Two innovative helium-cooled core designs are proposed, dedicated to the transmutation of actinides. READ MORE

  7. 5. Coordination Chemistry of Actinide and Lanthanide Ions

    Author : Ildiko Farkas; KTH; []
    Keywords : water exchange; dynamics. Uranium IV ; Thorium IV ; acuq ions; lanthanides; ;

    Abstract : .... READ MORE