Purpose

Module for interfacing to Screened Brenner Potential as described in

``Describing bond-breaking processes by reactive potentials: Importance of an environment-dependent interaction range. Lars Pastewka, Pablo Pou, Rubén Pérez, Peter Gumbsch, Michael Moseler. Phys. Rev. B (2008) vol. 78 (16) pp. 4 http://dx.doi.org/10.1103/PhysRevB.78.161402