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<p class="MsoNormal"><span lang="DE" style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D">Hi Tomer,<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="DE" style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D">how many grid points does your target have?<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D">From the manual you can find a formula to calculate the resolution. The rule of thumb with 10 grid points across the target thickness Fernando mentioned sounds
great.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D">Please pay attention, that you get multiple grid points across the target thickness for a refinement value of 1. Flash use the refinement of 1 to initialize the
box and then increase the amount of grid points according to the parameter refine_max.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D">To increase the resolution, you have three options:<o:p></o:p></span></p>
<p class="MsoListParagraph" style="margin-left:54.0pt;text-indent:-18.0pt;mso-list:l0 level1 lfo1">
<![if !supportLists]><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D"><span style="mso-list:Ignore">1.<span style="font:7.0pt "Times New Roman"">
</span></span></span><![endif]><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D">Decrease your box size<o:p></o:p></span></p>
<p class="MsoListParagraph" style="margin-left:54.0pt;text-indent:-18.0pt;mso-list:l0 level1 lfo1">
<![if !supportLists]><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D"><span style="mso-list:Ignore">2.<span style="font:7.0pt "Times New Roman"">
</span></span></span><![endif]><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D">Increase the value nb (in the example I think it was 16) from the setup line of flash<o:p></o:p></span></p>
<p class="MsoListParagraph" style="margin-left:54.0pt;text-indent:-18.0pt;mso-list:l0 level1 lfo1">
<![if !supportLists]><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D"><span style="mso-list:Ignore">3.<span style="font:7.0pt "Times New Roman"">
</span></span></span><![endif]><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D">Increase the number of initial blocks (nblock) from the par file.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D">I hope this will help you.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D">Best wishes<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D">Pascal<o:p></o:p></span></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><b><span style="font-size:11.0pt;font-family:"Calibri",sans-serif">Von:</span></b><span style="font-size:11.0pt;font-family:"Calibri",sans-serif"> flash-users <flash-users-bounces@flash.rochester.edu>
<b>Im Auftrag von </b>Tomer Catabi<br>
<b>Ges</b></span><b><span lang="DE" style="font-size:11.0pt;font-family:"Calibri",sans-serif">endet:</span></b><span lang="DE" style="font-size:11.0pt;font-family:"Calibri",sans-serif"> Montag, 17. Oktober 2022 21:14<br>
<b>An:</b> Garcia Rubio, Fernando <fgar@lle.rochester.edu><br>
<b>Cc:</b> flash-users@flash.rochester.edu<br>
<b>Betreff:</b> Re: [FLASH-USERS] LaserSlab simulation of a thin target<o:p></o:p></span></p>
<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">Hey Fernando,<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">Thanks for the reply, I tried increasing the refine variables, increasing the number of rays, and the number of blocks in the simulation and I am still getting the same result. Do you have any other suggestions on how to increase the number
of grid points? Am I missing something?<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">Thank you very much for your help,<o:p></o:p></p>
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<p class="MsoNormal">Tomer<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">On Wed, Oct 12, 2022 at 11:27 PM Garcia Rubio, Fernando <<a href="mailto:fgar@lle.rochester.edu">fgar@lle.rochester.edu</a>> wrote:<o:p></o:p></p>
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<p class="MsoNormal"><span style="color:black">Hello Tomer,</span> <o:p></o:p></p>
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<p class="MsoNormal"><span style="color:black"><o:p> </o:p></span></p>
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<p class="MsoNormal"><span style="color:black">Seems like you might not have enough grid points in the target. As a rule of thumb, you want to have 10 grid points across the target thickness. <o:p></o:p></span></p>
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<p class="MsoNormal"><span style="color:black"><o:p> </o:p></span></p>
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<p class="MsoNormal"><span style="color:black">Hope this helps!<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="color:black"><o:p> </o:p></span></p>
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<p class="MsoNormal"><span style="color:black">Fernando <o:p></o:p></span></p>
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<p class="MsoNormal"><span style="color:black">------------------------------------------<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="color:black">Fernando García Rubio, PhD<br>
Assistant Scientist<br>
Laboratory for Laser Energetics<br>
585-957-1743 <o:p></o:p></span></p>
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<p class="MsoNormal"><span style="color:black">------------------------------------------<o:p></o:p></span></p>
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<p class="MsoNormal"><br>
<br>
<o:p></o:p></p>
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<p class="MsoNormal">El 12 oct 2022, a las 11:48, Tomer Catabi <<a href="mailto:tomercatabi@mail.tau.ac.il" target="_blank">tomercatabi@mail.tau.ac.il</a>> escribió:<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">Hello Flash users and developers,<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">I am new to FLASH and am trying to make a simulation of laser induced plasma of a thin target (800 nm), similar to the laserslab example.<o:p></o:p></p>
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<p class="MsoNormal">I have changed the refinement so that the target is visible, but it seems that unlike when running the simulation with a thicker target, the target's thickness is not constant in respect to the 'z' axis. Has anyone encountered this issue
before? or maybe someone has an idea of what is the cause of the issue? <o:p></o:p></p>
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<p class="MsoNormal">I attached a graph of the electron number density on the 'z' axis before the laser interaction in which the issue appears.<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">Kind regards,<o:p></o:p></p>
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<p class="MsoNormal">Tomer<o:p></o:p></p>
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<p class="MsoNormal" style="margin-bottom:12.0pt"><0.0 nsns_1d-Profile_z_El_number_density.png><o:p></o:p></p>
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<p class="MsoNormal">_______________________________________________<br>
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<p class="MsoNormal"><o:p> </o:p></p>
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