<quip_params>
<SW_params n_types="2" label="PRB_31_plus_H">
<comment> Stillinger and Weber, Phys. Rev. B  31 p 5262 (1984), extended for other elements </comment>
<per_type_data type="1" atomic_num="1" />
<per_type_data type="2" atomic_num="14" />
<per_pair_data atnum_i="1" atnum_j="1" AA="0.0" BB="0.0"
      p="0" q="0" a="5.0" sigma="1.0" eps="0.0" />
<per_pair_data atnum_i="1" atnum_j="14" AA="8.581214" BB="0.0327827"
      p="4" q="0" a="1.25" sigma="2.537884" eps="2.1672" />
<per_pair_data atnum_i="14" atnum_j="14" AA="7.049556277" BB="0.6022245584"
      p="4" q="0" a="1.80" sigma="2.0951" eps="2.1675" />

<!-- triplet terms: atnum_c is the center atom, neighbours j and k -->
<per_triplet_data atnum_c="1"  atnum_j="1"  atnum_k="1"
      lambda="21.0" gamma="1.20" eps="2.1675" />
<per_triplet_data atnum_c="1"  atnum_j="1"  atnum_k="14"
      lambda="21.0" gamma="1.20" eps="2.1675" />
<per_triplet_data atnum_c="1"  atnum_j="14" atnum_k="14"
      lambda="21.0" gamma="1.20" eps="2.1675" />

<per_triplet_data atnum_c="14" atnum_j="1"  atnum_k="1"
      lambda="21.0" gamma="1.20" eps="2.1675" />
<per_triplet_data atnum_c="14" atnum_j="1"  atnum_k="14"
      lambda="21.0" gamma="1.20" eps="2.1675" />
<per_triplet_data atnum_c="14" atnum_j="14" atnum_k="14"
      lambda="21.0" gamma="1.20" eps="2.1675" />
</SW_params>

<SW_params n_types="2" label="eps_2.3">

<per_type_data type="1" atomic_num="1" />
<per_type_data type="2" atomic_num="14" />
<per_pair_data atnum_i="1" atnum_j="1" AA="0.0" BB="0.0"
      p="0" q="0" a="5.0" sigma="1.0" eps="0.0" />
<per_pair_data atnum_i="1" atnum_j="14" AA="8.581214" BB="0.0327827"
      p="4" q="0" a="1.25" sigma="2.537884" eps="2.3" />
<per_pair_data atnum_i="14" atnum_j="14" AA="7.049556277" BB="0.6022245584"
      p="4" q="0" a="1.80" sigma="2.0951" eps="2.3" />

<!-- triplet terms: atnum_c is the center atom, neighbours j and k -->
<per_triplet_data atnum_c="1"  atnum_j="1"  atnum_k="1"
      lambda="21.0" gamma="1.20" eps="2.3" />
<per_triplet_data atnum_c="1"  atnum_j="1"  atnum_k="14"
      lambda="21.0" gamma="1.20" eps="2.3" />
<per_triplet_data atnum_c="1"  atnum_j="14" atnum_k="14"
      lambda="21.0" gamma="1.20" eps="2.3" />

<per_triplet_data atnum_c="14" atnum_j="1"  atnum_k="1"
      lambda="21.0" gamma="1.20" eps="2.3" />
<per_triplet_data atnum_c="14" atnum_j="1"  atnum_k="14"
      lambda="21.0" gamma="1.20" eps="2.3" />
<per_triplet_data atnum_c="14" atnum_j="14" atnum_k="14"
      lambda="21.0" gamma="1.20" eps="2.3" />
</SW_params>

</quip_params>
