Plotnikov noted that for transitions with energy gaps larger than 0.25 eV, the vibrational continuum is dense, such that at least one energy resonance defect term is zero, dominating the overall contribution to the final internal conversion rate constant. Further, contributions due to anharmonic high frequency modes can be observed as small despite the vibrational quantum number ; as per Equation , a small occupation will result in a small contributing factor, rapidly decreasing as the quantum number increases. Therefore, the rate constant can be recast as :