<div dir="ltr">Hi Yaoxing,<div><br></div><div><br></div><div>It looks like you are running this in cylindrical coordinates with 3D in 2D for the laser beams. </div><div><br></div><div>The geometry of the simulation you are setting up is rotated around the vertical axis of your plot. </div><div><br></div><div>As a result, the beam at horizontal position == 0.0 cm has the intended intensity on target, </div><div><br></div><div>but the beam at horizontal position == 0.1 cm has its intensity spread over an annulus. </div><div><br></div><div>To produce your intended geometry, you can either go to full 3D or 2D-cartesian. </div><div><br></div><div><br></div><div>Andy</div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Tue, Jul 26, 2022 at 8:59 AM Wu, Yaoxing <<a href="mailto:wu1587@purdue.edu">wu1587@purdue.edu</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">
<div lang="ZH-CN" style="overflow-wrap: break-word;">
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<p class="MsoNormal"><span lang="EN-US">Dear FLASH users & developers,</span></p>
<p class="MsoNormal"><span lang="EN-US"><u></u> <u></u></span></p>
<p class="MsoNormal"><span lang="EN-US">I am doing some simulations of laser produced plasma. I have a question about how to set a dual pulse simultaneously irradiated on a disc target to generate a colliding plasma.
</span></p>
<p class="MsoNormal"><span lang="EN-US"><u></u> <u></u></span></p>
<p class="MsoNormal"><span lang="EN-US">I edit and add another Gaussian Beam2 in the runtime parameter file (.par) copied from LaserSlab simulation. The distance between Beam 1 and Beam 2 is set to 1000 um.
</span></p>
<p class="MsoNormal"><span lang="EN-US"><u></u> <u></u></span></p>
<p class="MsoNormal"><span lang="EN-US">All laser parameters of Beam 1 and Beam 2 are same except the incident position. But the plasma parameters generated by two beams are not same. I have attached the .par file and the electron temperature at 8 ns (The ray
trace in the picture is 0 ns). I also attached my experimental setup which I want to simulate.</span></p>
<p class="MsoNormal"><span lang="EN-US"><u></u> <u></u></span></p>
<p class="MsoNormal"><span lang="EN-US">I would appreciate any help. </span></p>
<p class="MsoNormal"><span lang="EN-US"><u></u> <u></u></span></p>
<p class="MsoNormal"><span lang="EN-US">Thanks!</span></p>
<p class="MsoNormal"><span lang="EN-US"><u></u> <u></u></span></p>
<p class="MsoNormal"><span lang="EN-US">Regards,</span></p>
<p class="MsoNormal"><span lang="EN-US">--</span></p>
<p class="MsoNormal"><span lang="EN-US">Yaoxing Wu</span></p>
<p class="MsoNormal"><span lang="EN-US">Wuhan National Laboratory for Optoelectronics</span></p>
<p class="MsoNormal"><span lang="EN-US">Huazhong University of Science and Technology</span></p>
<p class="MsoNormal"><span lang="EN-US">Luoyu Road 1037, Wuhan 430074</span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:12pt;font-family:SimSun"><u></u> <u></u></span></p>
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