Interatomic potential – Lennard-Jones–type model

Classical Physics – Problem 2: attractive / repulsive regions, equilibrium distance, and local Taylor expansion.

exponents n (repulsive) and m (attractive)

n = 14, m = 4

repulsive exponent n attractive exponent m (m < n)

V(r)/ε = (σ/r)ⁿ − (σ/r)ᵐ

test energy E/ε

E/ε = -0.80

turning points where V(r)/ε = E/ε (if E below 0)

potential – V(r)/ε vs r/σ