Commit fe80c57b authored by Ulf R. Pedersen's avatar Ulf R. Pedersen
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more documentation

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fix rhok command :h3

fix ID group-ID rhok nx ny nz k a
fix ID group-ID rhok nx ny nz k a :pre

ID, group-ID are documented in "fix"_fix.html command
nx,ny,nz = k-vektor of collective density field
k = spring constant of bias potential
a = anchor point of bias potential
a = anchor point of bias potential :ul

[Examples:]

fix bias all rhok 16 0 0 4.0 16.0
fix bias Bs rhok 12 12 0 10.0 32.0
fix bias Bs rhok 12 12 0 10.0 32.0 :pre

[Description:]

The fix applies an force to atoms 

:c,image(Eqs/fix_rhok.jpg)

as described in "(Pedersen)"_#Pedersen.

[Restrictions:]