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<p class="MsoNormal"><span style="font-size:11.0pt">Hi Victor,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt">The main problem with modeling short pulses with FLASH, at the moment, is that FLASH’s laser deposition only accounts for absorption via inverse bremsstrahlung. You would need a model for free-bound and bound-bound
absorption, which is not in FLASH.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt"><o:p> </o:p></span></p>
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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:black">--</span><span style="font-family:"Calibri",sans-serif;color:black"><o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:12.0pt;font-family:"Arial",sans-serif;color:#181A1B">Eddie Hansen</span><span style="font-family:"Calibri",sans-serif;color:black"><o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:12.0pt;font-family:"Arial",sans-serif;color:#181A1B">Applications Group Leader<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:12.0pt;font-family:"Arial",sans-serif;color:#181A1B">Flash Center for Computational Science</span><span style="font-family:"Calibri",sans-serif;color:black"><o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:11.0pt"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt"><o:p> </o:p></span></p>
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<p class="MsoNormal" style="margin-bottom:12.0pt"><b><span style="font-size:12.0pt;color:black">From:
</span></b><span style="font-size:12.0pt;color:black">flash-users <flash-users-bounces@flash.rochester.edu> on behalf of Victor Ramon Flores <floresvr@uci.edu><br>
<b>Date: </b>Friday, April 18, 2025 at 10:18 PM<br>
<b>To: </b>flash-users@flash.rochester.edu <flash-users@flash.rochester.edu><br>
<b>Subject: </b>[FLASH-USERS] Modeling Laser Induced Plasma Channel<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:12.0pt">Dear all,<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:12.0pt"><o:p> </o:p></span></p>
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<p class="MsoNormal"><span style="font-size:12.0pt">I hope you are all well. I have installed and ran FLASH on my university’s HPC. The example that I’m working on is the LaserSlab. I would like to model a 50 fs short pulse propagating through a few cms of
a He plasma. The main diagnostic I’m interested in looking at is the plasma density. Would something like this be possible on FLASH? Are there any current example inputs like this? Thank you all.<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:12.0pt"><o:p> </o:p></span></p>
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<p class="MsoNormal"><span style="font-size:12.0pt">Best regards,<br clear="all">
<br clear="all">
<o:p></o:p></span></p>
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<p class="MsoNormal"><b><span style="font-size:12.0pt">Victor Flores</span></b><span style="font-size:12.0pt"><o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:12.0pt">GSR, <span style="color:black">Department of Physics & Astronomy</span><o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:12.0pt;color:black">University of California, Irvine</span><span style="font-size:12.0pt"><o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:12.0pt;color:black">Dollar Lab</span><span style="font-size:12.0pt"><o:p></o:p></span></p>
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