Consider a heavy isotope that decays by way of spontaneous fission. In a heavy nucleus, the balance of the Coulomb force and the nuclear force is a delicate one, as seen in the higher probability of emission of alpha particles at the poles of oblong deformed nuclei, where the Coulomb barrier is thinner, than at the waist; and in the spontaneous fission of synthetic elements beyond a certain mass, where the nuclear force is inadequate to compensate for Coulomb repulsion.
Now subject the atoms of the heavy isotope to a magnetic field that is strong enough to create a gradient of electron density at the nucleus as a result of electron orbitals shifting under the influence of the field. Will there be a tidal force on the nucleus due to a differential balance of the Coulomb and nuclear forces at either end of the gradient? Is it conceivable that the rate of spontaneous fission could be altered as a result?