><br> When a delta potential is included in a time-dependent run, this
 variable defines in which direction the field will be applied
 by selecting one of the lines of <tt>TDPolarization</tt>. In a
 typical run (without using symmetry), the <tt>TDPolarization</tt> block
 would contain the three Cartesian unit vectors (the default
 value), and one would make 3 runs varying
 <tt>TDPolarization</tt> from 1 to 3.
<br><br>

</p><hr width='30%' align='left'/>


<p><b><a name='TDPolarizationEquivAxes'></a>TDPolari