Eliade Stefanescu - Analytical model for quantum tunnelling with dissipation through a fission-like barrier

Version 1

      Publication Details (including relevant citation   information):

      J. Phys. G: Nucl. Part. Phys. 20 (1994)  811

      Abstract:

      Analytical expressions for the spectral density of the tunnelling   rate  are found for a fission-like analytical barrier,   having three parts: an  internal part approximated by a   harmonic oscillator, a top part  considered constant and an   external part considered as a Coulomb  potential. We found   that environment-assisted tunnelling processes are  present   for all three regions and that an environment-stimulated   decay  is significant only for the Coulomb part of the   barrier. Numerical  calculations are made for the cold   fission of 236U to 138Xe+98Sr.

      Address (URL): http://iopscience.iop.org/0954-3899/20/5/014