which should be fulfilled for all combinations of the daughter species "X" and "Y" and their charges q X and q Y . For a given set of daughter fragments and the dissociation energy approximation from Equation , we can find the minimum dissociation energy by varying the charges q X and q Y with the charge conservation conditions Q = q X + q Y . This can be easily done using the Lagrangian multipliers technique. For that, we need to find the minimum of the function