Chemical Elements as Tracers of the Evolution of the Cosmos

IFIN-HH Horia Hulubei National Institute for R&D in Physics and Nuclear Engineering (Bucharest-Magurele, Romania)

Tandem Accelerator Complex and Romanian Ultra-low Radiation Background Laboratory (microBq): 3 MV Tandetron used in conjunction with the microBq lab demonstrated sensitivity in the range of a hundred pbarn for direct methods applications in nuclear astrophysics.

Tandem Accelerator Complex infrastructure consists of three tandem type particle accelerators along with their state-of-the-art research infrastructure. The 9 MV Tandem accelerator was installed in 1973 in IFIN-HH and was completely upgraded starting with 2006. The physics done at this facility is mainly nuclear physics. The 3 MV Tandetron accelerator which was installed in 2012 is manly used for applied physics, including ion beam analysis studies for material science, environmental science and any other field which needs very precise elemental identification. The machine is also used for precise ion implantation. The 1 MV Tandetron accelerator is the most specialised systems in the infrastructure, allowing the high precision determination of isotopic ratios with application in radiocarbon dating, geology, nuclear forensics, pharmacology, environmental studies and any other field that needs precise measurement of isotopic ratios.
microBq low-background radiation laboratory was constructed and fully commissioned in 2006 in the former Unirea (Slanic-Prahova) salt mine at 208 m below surface (estimated to 560 m water equivalent). Preliminary measurements showed a global reduction of the absorbed dose due to natural factors of about 39 times compared to level on the surface, reaching inside the mine 1.17±0.14 nGy/h. The total gamma background spectrum between 40 keV and 3 MeV was 4000 times smaller at laboratory level with respect to the same spectrum recorder at surface, in open field.


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Chetec Contact Persons: Livius Trache (livius.trache[at] and Mihai Straticiuc (mihai.straticiuc[at]