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<title>ATC: fix_modify AtC kernel</title>
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<h1><a class="anchor" id="man_kernel_function">fix_modify AtC kernel </a></h1><h2><a class="anchor" id="syntax">
syntax</a></h2>
<p>fix_modify AtC kernel &lt;type&gt; &lt;parameters&gt;</p>
<ul>
<li>type (keyword) = step, cell, cubic_bar, cubic_cylinder, cubic_sphere, quartic_bar, quartic_cylinder, quartic_sphere <br/>
</li>
<li>parameters :<br/>
step = radius (double) <br/>
cell = hx, hy, hz (double) or h (double) <br/>
cubic_bar = half-width (double) <br/>
cubic_cylinder = radius (double) <br/>
cubic_sphere = radius (double) <br/>
quartic_bar = half-width (double) <br/>
quartic_cylinder = radius (double) <br/>
quartic_sphere = radius (double) <br/>
</li>
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<h2><a class="anchor" id="examples">
examples</a></h2>
<p>fix_modify AtC kernel cell 1.0 1.0 1.0 fix_modify AtC kernel quartic_sphere 10.0 </p>
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description</a></h2>
<h2><a class="anchor" id="restrictions">
restrictions</a></h2>
<p>Must be used with the hardy AtC fix <br/>
For bar kernel types, half-width oriented along x-direction <br/>
For cylinder kernel types, cylindrical axis is assumed to be in z-direction <br/>
( see <a class="el" href="man_fix_atc.html">fix atc command</a> ) </p>
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