RadChem 2014

Session

Chemistry of Actinide and Trans-actinide Elements 3

TAN-3

13 May 2014, 13:30

Casino Conference Centre

Conveners

Chemistry of Actinide and Trans-actinide Elements 3

• Jerzy Narbutt (Institute of Nuclear Chemistry and Technology)
• Ladislav Havela (Charles University)

364. Utilization of Technetium and Actinide Compound Synthesis and Coordination Chemistry for the Nuclear Fuel Cycle: Exploring Separations, Fuels, and Waste Forms

Prof. Kenneth Czerwinski (University of Nevada, Las Vegas)

13/05/2014, 13:30

Chemistry of Actinide and Trans-actinide Elements

Invited

Compared to other elements on the periodic table, technetium and the actinides are less explored, especially in areas of compound synthesis and coordination chemistry. The nuclear fuel cycle offers opportunities to investigate fundamental and applied technetium and actinide chemistry in more detail, with fundamental complexation chemistry providing insight into waste forms, fuels, and...

279. Solid state diffusion interactions of metallic uranium with technetium

Prof. Ken Czerwinski (University of Nevada, Las Vegas, United States)

13/05/2014, 14:00

Chemistry of Actinide and Trans-actinide Elements

Verbal

In metallic nuclear fuels, uranium will interact with fission products formed at higher burn-ups. Understanding the binary interactions between components is helpful in building a description of the overall system consisting of fuel and fission products. Many of the fission product metals are easy to obtain and study in reactions with metallic depleted uranium to simulate conditions in an...

29. Application of Multi-Step Excitation Schemes for Detection of Actinides and Lanthanides in Solutions by Laser Specroscopy

Prof. Igor Izosimov (JINR)

13/05/2014, 14:15

Chemistry of Actinide and Trans-actinide Elements

Verbal

Development of laser spectroscopy with tunable lasers gives rise to new procedures for detection of trace amounts of various substances in various media. A possibility to tune a wavelength of laser radiation allows selective action on certain atoms and molecules and, hence, selective detection of these species [1]. The practical application of laser spectroscopy to analysis of different...

108. Inverse quenching effect of excited U(VI) ions by Eu(III) ions in aqueous solutions

Dr Euo Chang Jung (Korea Atomic Energy Reserach Institute)

13/05/2014, 14:30

Chemistry of Actinide and Trans-actinide Elements

Verbal

This talk will focus on energy transfer phenomena between hexavalent uranium (U) ions (U(VI)) and trivalent europium ions (Eu(III)). In the literature on this subject [1-3], the interaction between U(VI) and Eu(III) was explained as intramolecular energy transfer from excited U(VI) to Eu(III), and thus, the strong quenching of the luminescence of excited U(VI) by Eu(III) was observed. Because...

150. Spectrophotometric and TRLFS speciation study of UO2(2+) - ChO4(2-) – H2O (Ch = S, Se) system

Mr Jakub Visnak (Department of Nuclear Chemistry, Faculty of Nuclear Sciences and Physical Engineering, Czech Technical University in Prague)

13/05/2014, 14:45

Chemistry of Actinide and Trans-actinide Elements

Verbal

This experimental study seeks for stability constants $\beta_m°$, absorption $Z_m(\lambda)$ and fluorescence $Z_m(\lambda)$ spectra (including fluorescence lifetimes $\tau_m$) for the individual species of the general formula $[UO_2(ChO_4)_n]^{2-2n}$ (n $\in$ {0; 1; 2; 3}), specific ion interaction theory parameters $\epsilon(i,j)$ between uran-containing species and the most dominantly...