fix_efield.html
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	<CENTER><A HREF = "http://lammps.sandia.gov">LAMMPS WWW Site</A> - <A HREF = "Manual.html">LAMMPS Documentation</A> - <A HREF = "Section_commands.html#comm">LAMMPS Commands</A>
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	<H3>fix efield command
	</H3>
	<P><B>Syntax:</B>
	</P>
	<PRE>fix ID group-ID efield ex ey ez
	</PRE>
	<UL><LI>ID, group-ID are documented in <A HREF = "fix.html">fix</A> command
	<LI>efield = style name of this fix command
	<LI>ex,ey,ez = E-field component values (electric field units)
	</UL>
	<P><B>Examples:</B>
	</P>
	<PRE>fix kick external-field efield 1.0 0.0 0.0
	</PRE>
	<P><B>Description:</B>
	</P>
	<P>Add a force F = qE to each charged atom in the group due to an
	external electric field being applied to the system.
	</P>
	<P><B>Restrictions:</B> none
	</P>
	<P><B>Related commands:</B>
	</P>
	<P><A HREF = "fix_addforce.html">fix addforce</A>
	</P>
	<P><B>Default:</B> none
	</P>
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