A two state model study of photo‐detachment dynamics driven by an optimally designed polychromatic field: A simulated annealing based optimisation

The surfaces of F 2 −and F 2 are two well separated surfaces modeled by two Morse potentials. In presence of a field, these two surfaces couple and transition from F 2 −to F 2 takes place resulting in the detachment of an electron. We have applied Simulated Annealing (SA) technique to design the polychromatic field which results in ∼ 95% probability of photo detachment (P d ). Also we have designed a field to achieve photo detachment followed by dissociation of FF bond with nearly 38% dissociation probability. F 2 being a homo nuclear diatomic molecule, promotion to the continuum states by directly exciting it from its ground vibrational state is an impossibility and our method appears to be a feasible solution if the target is to break the FF bond.