 approximation<a class="headerlink" href="#Quantitative-criterion-for-the-applicability-of-the-flow-laminarity-approximation" title="Permalink to this headline">¶</a></h2>
<p>This system of equations makes it possible to take into account 2 effects that interfere with focusing the beam at a point — the finiteness of the emmittance and the space charge. Members work the same way, so you can compare these values.</p>
<p>When the current <span class="math notranslate nohighlight">\(I\)</span> is small - wea