Hi Lammps users,
Hope you all are having happy holiday, I wanted to make sure that I truly understand the idea of having vacuum around my sample. If I have a large simulation box, and created atoms in a specific volume (subset of the simulation box) and used (f) boundary conditions in all directions, does that mean that the gap between the beam surface and the borders of the simulation box that doesn’t have atoms is vacuum? Also I will not have this vacuum if I just used (s) boundary conditions? Thanks
Mohamed
Hi Lammps users,
Hope you all are having happy holiday, I wanted to make sure that I truly understand the idea of having vacuum around my sample. If I have a large simulation box, and created atoms in a specific volume (subset of the simulation box) and used (f) boundary conditions in all directions, does that mean that the gap between the beam surface and the borders of the simulation box that doesn't have atoms is vacuum?
Yes, it is vacuum.
Also I will not have this vacuum if I just used (s) boundary conditions?
No, it is still vacuum. You have vacuum if boundary conditions are not periodic.
Ray