Sökning: "transuranium TRU"

Hittade 3 avhandlingar innehållade orden transuranium TRU.

1. 1. Determination of Sr90 and the Transuranium Elements in the Event of a Nuclear Accident

   Författare :Ingvar Friberg; Chalmers tekniska högskola; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; transuranium TRU elements; nuclear accident; Sr90; solvent extraction; radioanalysis; HDEHP; Cherenkov; DMDBTDMA;

   Sammanfattning : To reduce the health effects of a nuclear accident, it is essential that suitable analytical methods are available for determinations of radionuclides released to the environment. Sr90 and the transuranium (TRU) elements are of great radiological importance, and they are more difficult to measure than many other radionuclides. LÄS MER

3. 2. Accelerator-driven systems : source efficiency and reacitvity determination

   Författare :Andrei Fokau; Jan Wallenius; Viktor Tikhomirov; KTH; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Nuclear physics; Kärnfysik;

   Sammanfattning : Accelerator-driven systems (ADS) are being investigated and designed for transmutation of the long-lived nuclear waste. Application of ADS allows to safely transmute large fractions of minor actinides (MA) per reactor core, while the fraction in critical reactors is limited to a few percent due to the safety constraints. LÄS MER

4. 3. Neutronic and burnup studies of accelerator-driven systems dedicated to nuclear waste transmutation

   Författare :Kamil Tucek; Jan Wallenius; Massimo Salvatores; KTH; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Physics; Fysik; Physics; Fysik;

   Sammanfattning : Partitioning and transmutation of plutonium, americium, and curium is inevitable if the radiotoxic inventory of spent nuclear fuel is to be reduced by more than a factor of 100. But, admixing minor actinides into the fuel severely degrades system safety parameters, particularly coolant void reactivity, Doppler effect, and (effective) delayed neutron fractions. LÄS MER