Research

Thin film growth of enriched isotopes

Single-charged mass-selected ion beams are guided through a decelerator column to facilitate a soft-landing (10-100 eV), and optionally indirect deposition of beam particles on sample surfaces. This technique provides a homogenous thin film growth on surfaces of specific materials, which can be employed in various fields of material sciences. In our project a plastic surface binds selenium atoms from indirect soft-landing deposition, which was found a highly efficient way to form inorganic compounds of selenium with well-defined oxidation states through surface mediated reactions.

Tracing of selenium nanoparticles

		SEM-picture of selenium nanoparticles released from partial digestion of Lactobacilli. The nanoparticles were grown at the University of Debrecen. The spectral analysis and the picture were taken at the SEM facility of the Department of Solid State Physics at the University of Debrecen.
		Mass spectrum of natural and enriched Se-74 samples analyzed with SNMS (Secondary Neutral Mass Spectrometer) technique at ATOMKI.
		Mass spectrum of selenium nanoparticles grown endohedrally by Lactobacilli from natural selenium and enriched Se-76. The bacterial samples were dried and directly analyzed by the SNMS.

hunyadi@atomki.hu