1. Institute of Nuclear Chemistry, Johannes Gutenberg-University Mainz, Fritz-Strassmann-Weg 2, D-55128 Mainz, Germany
2. Dzhelepov Laboratory of Nuclear Problems, Joint Institute of Nuclear Research, Joliot-Curie 6, 141980, Dubna, Moscow region, Russian Federation
3. Institute for Nuclear Research and Nuclear Energy, Bulgarian Academy of Sciences, Tsarigradsko shose 72, 1784, Sofia, Bulgaria
4. University of Sofia, Faculty of Chemistry and Pharmacy, Tsar Osvoboditel Blvd. 15, 1504, Sofia, Bulgaria
5. Institute of Nuclear Physics of the Republic of Kazakhstan, Ibragimov St. 1, 050032, Almaty, Kazakhstan