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examples:potentials:pair:2

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Examples : Pair Potentials

This is a simple pair potential that can be used in potfit. The analytic function used is a Lennard-Jones.

It makes use of the global parameters feature.

Example_Pair_2
#F 0 3
#T PAIR
#I 0 0 0
#E

global 1
epsilon 0.10    0.00    1.00

type lj
cutoff 6.0
epsilon!
sigma   2.50    1.00    4.00

type lj
cutoff 6.0
epsilon!
sigma   2.50    1.00    4.00

type lj
cutoff 6.0
epsilon!
sigma   2.50    1.00    4.00

The first parameter of each lj-potential (epsilon!) will be replaced with the epsilon parameter of the global section. This can be used to share parameters amongst several potentials.

makeapot

The example potential can be generated with the following makeapot command:

Global parameters are not supported by makeapot. They have to be introduced manually in the potential file. The plain potential file can be generated with

makeapot -n 2 -i pair -f 3*lj
examples/potentials/pair/2.1376574323.txt.gz ยท Last modified: 2013/08/15 15:45 by daniel