Fusion cross sections for fusion energy

A new formula for fusion cross sections is proposed with less parameters and better understanding of fusion physics. It is based on the complex nuclear potential in connection with the Coulomb repulsion field. It reproduces the ENDF/B-VI data from 200 eV to 280 keV for D + T fusion reaction reasonably well. The widely used formula in NRL's Handbook is discussed while some mistakes there are corrected. This formalism is particularly useful in searching the low energy resonance between two charged nuclei.