Prediction of the thermal release of transactinide elements (112 ≤ Z ≤ 116) from metals
-
David Wittwer
Abstract
Metallic catcher foils have been investigated on their thermal release capabilities for future superheavy element studies. These catcher materials shall serve as connection between production and chemical investigation of superheavy elements (SHE) at vacuum conditions. The diffusion constants and activation energies of diffusion have been extrapolated for various catcher materials using an atomic volume based model. Release rates can now be estimated for predefined experimental conditions using the determined diffusion values. The potential release behavior of the volatile SHE Cn (E112), E113, Fl (E114), E115, and Lv (E116) from polycrystalline, metallic foils of Ni, Y, Zr, Nb, Mo, Hf, Ta, and W is predicted. Example calculations showed that Zr is the best suited material in terms of on-line release efficiency and long-term operation stability. If higher temperatures up to 2773 K are applicable, tungsten is suggested to be the material of choice for such experiments.
© by Oldenbourg Wissenschaftsverlag, München, Germany
Artikel in diesem Heft
- Cross section measurements of a few threshold reactions induced by fast neutrons from an Am/Be source: integral tests of differential neutron reaction cross section data
- Prediction of the thermal release of transactinide elements (112 ≤ Z ≤ 116) from metals
- Complexation thermodynamics and structural studies of trivalent actinide and lanthanide complexes with DTPA, MS-325 and HMDTPA
- Synthesis and characterization of thorium, uranium and cerium oxide nanoparticles
- Improved radioanalytical method for the simultaneous determination of Th, U, Np, Pu and Am(Cm) on a single TRU column by alpha spectrometry and ICP-MS
- Electrochemical reduction of U(VI) in H2SO4 at gold nanoporous film electrode
- The redox chemistry of neptunium in γ-irradiated aqueous nitric acid
- The incorporation of europium into apatite: anew explanation
- Instrumental neutron activation analysis for the study of size-fractionated airborne particulate matter samples
Artikel in diesem Heft
- Cross section measurements of a few threshold reactions induced by fast neutrons from an Am/Be source: integral tests of differential neutron reaction cross section data
- Prediction of the thermal release of transactinide elements (112 ≤ Z ≤ 116) from metals
- Complexation thermodynamics and structural studies of trivalent actinide and lanthanide complexes with DTPA, MS-325 and HMDTPA
- Synthesis and characterization of thorium, uranium and cerium oxide nanoparticles
- Improved radioanalytical method for the simultaneous determination of Th, U, Np, Pu and Am(Cm) on a single TRU column by alpha spectrometry and ICP-MS
- Electrochemical reduction of U(VI) in H2SO4 at gold nanoporous film electrode
- The redox chemistry of neptunium in γ-irradiated aqueous nitric acid
- The incorporation of europium into apatite: anew explanation
- Instrumental neutron activation analysis for the study of size-fractionated airborne particulate matter samples
