pan class="mi">1</span><span class="p">)</span>
    <span class="n">r_1D</span><span class="o">=</span><span class="n">F</span><span class="p">%</span><span class="n">r_1D</span>
    <span class="n">sigr</span><span class="o">=</span><span class="n">dr</span>

    <span class="n">Vpart</span><span class="o">=</span><span class="mf">0._rp</span>
    <span class="k">do </span><span class="n">cc</span><span class="o">=</span><span class="mi">1_idef</span><span class="p">,</span><span class="n">pchunk</span>

 