Evidence of Z=120 compound nucleus formation from lifetime measurement in the $^{238}$U+Ni reaction at 6.62 MeV/nucleon
Résumé
The formation of compound nuclei with Z=120, followed by fission, has been evidenced in the 238U+Ni system at 6.62 MeV/nucleon by very long reaction times (t ~ 10-17s) measured by the blocking technique in single crystals.