Long-Lived Superheavy Nuclei and Giant Quasi-Atoms Produced in Damped Collisions of Transactinides
Damped collisions of tranactinide nuclei (<SUP>238</SUP>U+<SUP>238</SUP>U, <SUP>232</SUP>Th+<SUP>250</SUP>Cf, and <SUP>238</SUP>U+<SUP>248</SUP>Cm) have been studied within the realistic model based on solution of multidimensional transport equations. Large charge and mass transfer was found in these reactions due to the inverse (anti-symmetrizing) quasi-fission process leading to formation of survived superheavy long-lived neutron-rich nuclei, suitable for subsequent chemical analysis. In many events lifetime of the composite system consisting of two touching nuclei (giant quasi-atoms) turns out to be rather long; sufficient for spontaneous positron formation from super-strong electric field, a fundamental QED process.
- Journal of Nuclear and Radiochemical Sciences
Journal of Nuclear and Radiochemical Sciences 7(1), R1-R5, 2006-06-01
The Japan Society of Nuclear and Radiochemical Sciences