The Average Lifetime of Giant Composite Systems Formed in Strongly Damped Collisions

  • Received Date: February 27, 2007
  • Published Date: September 30, 2007
  • The dynamic, adiabatic and diabatic entrance potentials in strongly damped reactions of 238U+238U, 232Th+250Cf are calculated and compared. The feature of the dynamical potential implies that it is possible for the composite systems to stick together for a period of time. By means of the improved quantum molecular dynamics model the time evolution of the density and
    charge distributions of giant composite systems and their fragments for reactions 238U+238U, 232Th+250Cf are investigated, from which the lifetimes of giant composite systems at different energies are obtained. The longest average lifetime of 238U+238U is found when the incident energy is about
    Ec.m=1080MeV, which is about 1200fm/c.
  • Article Text

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