Laser-induced chemistry for radioactive solution.

Laser Trapping of Radioactive Atoms

Light forces acting on radioactive atoms confine them in very dense and cold samples achieving large phase space density. We describe the processes of radioactive atom production, reduction of their velocity and capture. The trapped atoms form excellent sources for the study of atomic parity non-conservation, β decay asymmetry, other weak force processes, and α decay asymmetry.

Electron beam induced chemistry of gold nanoparticles in saline solution.

It was studied how the chemistry of gold nanoparticles in water is influenced by solution parameters such as the pH or the NaCl concentration under electron beam irradiation. We found that depending on these parameters the gold nanoparticles either dissolved, merged or remained unchanged.

STANDARDIZATION OF Tl-201 RADIOACTIVE SOLUTION

The standardization of Tl, using the 4π(PC)-NaI(Tl) coincidence system, is presented. The disintegration rate was determined by the extrapolation technique, using two methods: electronic discrimination and external absorbers. A Monte Carlo simulation program, developed in our laboratory, which predicts the behavior of the extrapolation curve, was applied and the results were compared with exper...

Radical Chemistry in a Femtosecond Laser Plasma: Photochemical Reduction of Ag⁺ in Liquid Ammonia Solution.

Plasmas with dense concentrations of reactive species such as hydrated electrons and hydroxyl radicals are generated from focusing intense femtosecond laser pulses into aqueous media. These radical species can reduce metal ions such as Au3+ to form metal nanoparticles (NPs). However, the formation of H₂O₂ by the recombination of hydroxyl radicals inhibits the reduction of Ag⁺ through back-oxida...

Molecular Twister: A Game for Exploring Solution Chemistry†