Created by AJB

2 atoms
2 atom types

-1.0 1.0 xlo xhi
-1.0 1.0 ylo yhi
-1.0 1.0 zlo zhi

Masses

1 1.000794	# H nuclei mass
2 1.000000	# electron mass

Atoms

1 1 1.0 0 0.0 0.0 0.0 0.0
2 2 0.0 1 1.0 0.0 0.0 0.0