quations is shown here.</p>
<div class="section" id="Maxwell-Equations">
<h2>Maxwell Equations<a class="headerlink" href="#Maxwell-Equations" title="Permalink to this headline">¶</a></h2>
<p>Bulk current density of the beam <span class="math notranslate nohighlight">\(\jmath = \rho\upsilon\)</span>, where <span class="math notranslate nohighlight">\(\rho\)</span> is the bulk charge density, <span class="math notranslate nohighlight">\(\upsilon\)</span> is the beam velocity. We write the differential equati