Actinium-225 is a promising isotope for targeted-α therapy. Unfortunately, progress in developing chelators for medicinal applications has been hindered by a limited understanding of actinium chemistry. This knowledge gap is primarily associated with handling actinium, as it is highly radioactive and in short supply. Hence, Ac(III) reactivity is often inferred from the lanthanides and minor act...

Exploring new fields: Lanthanide-using bacteria that turn over methane or methanol in their metabolism can replace essential lanthanides by certain actinides. In Research Article (e202303669), Lena J. Daumann et al. show an extremophile isolated from a volcanic mud-pot as well methylotrophic laboratory strain use americium and curium. vivo growth experiments vitro studies with the key metabolic...

Microorganisms can affect the stability and mobility of the actinides U, Pu, Cm, Am, Np, and the fission products Tc, I, Cs, Sr, released from nuclear fuel reprocessing plants. Under appropriate conditions, microorganisms can alter the chemical speciation, solubility and sorption properties and thus could increase or decrease the concentrations of radionuclides in solution and the bioavailabili...

Portfolio Description This activity supports basic research on the fundamental chemistry of the elements beyond actinium (those elements with an atomic number greater than 89); typically uranium, neptunium, plutonium, americium, and curium. The goal of this activity is to understand the underlying chemical and physical principles that determine the behavior of the actinides and transactinides e...

Lanthanides/actinides sorption speciation on minerals and oxides by means of time resolved laser fluorescence spectroscopy (TRLFS), extended X-ray absorption fine structure spectroscopy (EXAFS) and density functional theory (DFT) is reviewed in the field of nuclear disposal safety research. The theoretical aspects of the methods are concisely presented. Examples of recent research results of la...

Abstract We propose an efficient approach to describe the fission-fragment charge yields for actinides based on driving potential of fissioning system. Considering properties primary fission fragments at their ground states, potential, which represents energies system around scission configuration and closely relates fragments, can be unambiguously quickly obtained from Skyrme energy-density fu...

The total kinetic energy (TKE) of fission fragments for some heavy actinides is investigated and calculated using the scission point model. First, deformation parameters are obtained by fitting results to available experimental data. Then, behavior TKE distribution fission. This indicates that Usang model can better explaine heavier than californium Unik Also, value be approximated sum Coulomb ...