The time evolution of the coefficients a₁ and a₂ as a consequence of radiation for a particle of charge e in a potential box of length s. a₁ and a₂ are the contribution of ground state and first excited state to the superposition respectively . K = (k²s²e² w ⁴ ) / (48p e ₀ c³) and D E = E₂ - E₁ , k is a constant close to 2, w = D E/h.