<Coulomb_Potentials>

   <Coulomb_params n_types="2" cutoff="6.0" method="ewald" ewald_error="1.0e-6" smooth_coulomb_cutoff="0.0" label="default_ewald">
      <per_type_data type="1" atomic_num="8" charge="-1.2"/>
      <per_type_data type="2" atomic_num="14" charge="2.4"/>
   </Coulomb_params>

   <Coulomb_params n_types="2" cutoff="6.0" method="direct" label="default_direct">
      <per_type_data type="1" atomic_num="8" charge="-1.2"/>
      <per_type_data type="2" atomic_num="14" charge="2.4"/>
   </Coulomb_params>

   <Coulomb_params n_types="2" cutoff="6.0" method="yukawa" yukawa_alpha="0.1" yukawa_smooth_length="10.0" yukawa_pseudise="F" yukawa_grid_size="0.0" label="default_yukawa">
      <per_type_data type="1" atomic_num="8" charge="-1.2"/>
      <per_type_data type="2" atomic_num="14" charge="2.4"/>
   </Coulomb_params>

</Coulomb_Potentials>