, Volume 45, Issue 1, pp 27-31
Date: 28 Mar 2007

Direct experimental evidence for very long fission times of super-heavy elements

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The blocking technique in single crystals has been applied to reaction time measurements for the 238U + Ge system at 6.1 MeV/nucleon. Backed up with a reaction mechanism analysis using the INDRA 4π detector, it provides a direct experimental evidence for Z = 124 compound nuclei living longer than 10-18 s, indicating thus very high fission barriers for this element.