Advances in Nuclear und Radiochemistry. Extended Abstracts and Papers presented at the Sixth International Conference on Nuclear and Radiochemistry (NRC-6), 29 August to 3 September 2004, Aachen, Germany. In Cooperation with Iniveristy of Cologne, GDCh, FECS, OECD-NEA and IAEA. (= Schriftenreihe des Foschungszentrums Jülich / Reihe Allgemeines und Interdisziplinäres - Band 3)