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<p class="MsoNormal"><span lang="EN-US">Dear FLASH users & developers,<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">I am simulating a laser pulse irradiated on a slab target based on the LaserSlab simulation in
</span>“<span lang="EN-US">cartesian 2D</span>”<span lang="EN-US">. I have two questions during the simulation and attached the screenshots and .par file.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<ol style="margin-top:0cm" start="1" type="1">
<li class="MsoListParagraph" style="margin-left:0cm;mso-list:l0 level1 lfo1"><span lang="EN-US">Sometimes the simulation is aborted after several nanoseconds and a message shows
</span>“<span lang="EN-US">Negative 3T internal energy</span>”<span lang="EN-US">. This problem will occur when I adjust the
</span>“<span lang="EN-US">Domain size</span>”<span lang="EN-US"> and </span>“<span lang="EN-US">Total number of blocks</span>”<span lang="EN-US"> in the .par file. Could you please tell me the reason and how to prevent this problem for long-time (>500 ns)
simulation?<o:p></o:p></span></li></ol>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<ol style="margin-top:0cm" start="2" type="1">
<li class="MsoListParagraph" style="margin-left:0cm;mso-list:l0 level1 lfo1"><span lang="EN-US">The surface of the target is filled with a high-temperature region even far from the laser interaction position. It is not reasonable because the plume of laser
produced slab plasma is like an elliptic.<o:p></o:p></span></li></ol>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">Thanks. I would appreciate for your any help.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">Regards,<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">Yaoxing Wu<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:12.0pt;font-family:SimSun"><o:p> </o:p></span></p>
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