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<p class="MsoNormal"><span style="font-size:11.0pt">Hi Hyungyu,<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">I think the choice is up to you. Critical density for 1053 nm is around 1.e21 1/cc, so yes with <Z> = 0.02, the initial ne is slightly above at 1.21e23 1/cc. I believe this choice was simply to get a good
amount of absorption right away.<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 Al will heat up quickly. To get to ne ~ 1.e23 1/cc requires a relatively small amount of ionization to <Z> = 1.7, which typically corresponds to around 18 eV.<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">So you can try initializing with ZMin = 1.7. If the Al heats up quickly, the results should not be too different.<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;color:black">--</span><span style="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="color:black"><o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:12.0pt;font-family:"Arial",sans-serif;color:#181A1B">Research Scientist</span><span style="color:black"><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="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
</span><span style="font-size:12.0pt;font-family:"Malgun Gothic",sans-serif;color:black">À¯Çö±Ô</span><span style="font-size:12.0pt;color:black"> <hgyu1996@gm.gist.ac.kr><br>
<b>Date: </b>Friday, June 23, 2023 at 10:14 AM<br>
<b>To: </b>flash-users@flash.rochester.edu <flash-users@flash.rochester.edu><br>
<b>Subject: </b>[FLASH-USERS] Setting minimum ionization level in LaserSlab<o:p></o:p></span></p>
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<p class="MsoNormal"><span class="gmaildefault"><span style="font-size:18.0pt;font-family:"Times New Roman",serif">Dear Flash developers and users,</span></span><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"><o:p> </o:p></span></p>
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<p class="MsoNormal"><span style="font-size:13.5pt;font-family:"Times New Roman",serif">I am working on the simulation of laser-induced ablation of Al target using mtmmmt EOS provided by FLASH.</span><span style="font-size:11.0pt"><o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:18.0pt;font-family:"Times New Roman",serif"><o:p> </o:p></span></p>
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<p class="MsoNormal"><span style="font-size:18.0pt;font-family:"Times New Roman",serif">According to documents, the minimum ionization level ms_targZmin in LaserSlab must be set to the value larger than value corresponds to critical density. In the example.par
file, the ms_targZmin is set to 0.02, which corresponds to around critical density of 1053nm (1.205e+21 1/cc) in .par file.<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:18.0pt;font-family:"Times New Roman",serif"><o:p> </o:p></span></p>
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<p class="MsoNormal"><span style="font-size:18.0pt;font-family:"Times New Roman",serif">However, the initial electron density of the target is generally set to free electron density (order of 1e+23 1/cc) in the other hydrodynamics simulations such as HYDRA
or HELIOS.<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:18.0pt;font-family:"Times New Roman",serif"><o:p> </o:p></span></p>
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<p class="MsoNormal"><span style="font-size:18.0pt;font-family:"Times New Roman",serif">Do I have to set ms_targZmin as corresponding value of free electron density of Al when using mtmmmt?<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:18.0pt;font-family:"Times New Roman",serif"><o:p> </o:p></span></p>
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<p class="MsoNormal"><span style="font-size:18.0pt;font-family:"Times New Roman",serif">Is the value of ms_targZmin provided by example.par physically not correct?<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:18.0pt;font-family:"Times New Roman",serif"><o:p> </o:p></span></p>
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<p class="MsoNormal"><span style="font-size:18.0pt;font-family:"Times New Roman",serif"><o:p> </o:p></span></p>
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<p class="MsoNormal"><span style="font-size:18.0pt;font-family:"Times New Roman",serif"><o:p> </o:p></span></p>
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<p class="MsoNormal"><span style="font-size:18.0pt;font-family:"Times New Roman",serif"><o:p> </o:p></span></p>
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<p class="MsoNormal"><span style="font-size:18.0pt;font-family:"Times New Roman",serif"><o:p> </o:p></span></p>
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<p class="MsoNormal"><span style="font-size:18.0pt;font-family:"Times New Roman",serif">Regards,<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:18.0pt;font-family:"Times New Roman",serif"><o:p> </o:p></span></p>
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<p class="MsoNormal"><span style="font-size:18.0pt;font-family:"Times New Roman",serif">Hyungyu Yu<o:p></o:p></span></p>
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