  Rapid-advancing intense laser technologies enable the possibility of a direct
laser-nucleus coupling. In this paper the effect of intense laser fields on a
series of nuclear fission processes, including proton decay, alpha decay, and
cluster decay, is theoretically studied with the help of nuclear double folding
potentials. The results show that the half-lives of these decay processes can
be modified by non-negligible amounts, for example on the order of 0.01 or 0.1
percents in intense laser fields available in the forthcoming years. In
addition to numerical results, an approximate analytical formula is derived to
connect the laser-induced modification to the decay half-life and the decay
energy.
