zbl potential for Argon

Dear all users,

I want to simulate the collision of a high energy Argon with graphene/Cu system using zbl potential for Ar-C and Ar-Cu interactions.

here is the pair_style and pair coefficient that I insert in the input file:

you should upgrade your LAMMPS version at any rate. in the last 5 years there have been numerous improvements, bug fixes and better diagnostics added to LAMMPS so that it will be worth the effort anyway.