  Coulomb fission mechanism may take place if the maximum Coulomb-excitation
energy transfer in a reaction exceeds the fission barrier of either the
projectile or target. This condition is satisfied by all the reactions used for
the earlier blocking measurements except one reaction 208 Pb + Natural Ge
crystal, where the measured timescale was below the measuring limit of the
blocking measurements < 1 as. Hence, inclusion of the Coulomb fission in the
data analysis of the blocking experiments leads us to interpret that the
measured time longer than a few attoseconds (about 2-2.5 as) is nothing but
belonging to the Coulomb fission timescale and shorter than 1 as are due to the
quasifission. Consequently, this finding resolves the critical discrepancies
between the fission timescale measurements using the nuclear and blocking
techniques. This, in turn, validates the fact that the quasifission timescale
is indeed of the order of zeptoseconds in accordance with the nuclear
experiments and theories. It thus provides a radical input in understanding the
reaction mechanism for heavy element formation via fusion evaporation processes
