Enter a species  (e.g. Al, Fe): Rb
Enter a hexagonal lattice type (e.g. hcp): hcp
Enter a model name: Morse_Shifted_GirifalcoWeizer_1959LowCutoff_Rb__MO_754498969542_004
Enter hexagonal lattice constants 'a' and 'c' (m): 5.187302425627488e-10, 8.464216256469641e-10