Publication Details (including relevant citation information):
J. Phys. G: Nucl. Part. Phys. 20 (1994) 811
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