  A fluid composed of two molecular species may undergo phase segregation via
spinodal decomposition. However, if the two molecular species can interconvert,
e.g. change their chirality, then a phenomenon of phase amplification, which
has not been studied so far, emerges. As a result, eventually, one phase will
completely eliminate the other one. We model this phenomenon on an Ising system
which relaxes to equilibrium through a hybrid of Kawasaki-diffusion and
Glauber-interconversion dynamics. By introducing a probability of
Glauber-interconversion dynamics, we show that the particle conservation law is
broken, thus resulting in phase amplification. We characterize the speed of
phase amplification through scaling laws based on the probability of Glauber
dynamics, system size, and distance to the critical temperature of demixing.
