<div dir="ltr">Dear Gate Users,<br><div><br></div><div>Can anybody help me in the above problem? I will be very happy for your guidance.</div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Wed, Sep 4, 2019 at 7:57 PM HUSSAIN KHALID / UPM <<a href="mailto:gs54017@student.upm.edu.my">gs54017@student.upm.edu.my</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 dir="ltr">Dear Gate Users,<div><div><br></div><div>Please guide me, I want to calculate mass attenuation coefficients for physics process. As, mass attenuation coefficient depends on material density, thickness and no. of particles entering the absorbing material and no. of particles leaving the material without interactions.But I wonder to see that the value of mu_mass <b>does not change with changing the thickness</b> of the absorbing material to which this actor is attached.</div><div><font color="#ff00ff">/gate/scanner/daughters/name slab<br>/gate/scanner/daughters/insert box<br>/gate/slab/geometry/setXLength 10. cm<br>/gate/slab/geometry/setYLength 40. cm<br>/gate/slab/geometry/setZLength .9525 cm<br>/gate/slab/placement/setTranslation 0. 0. 20 cm<br>/gate/slab/setMaterial NaI # Sodium Iodide <br>/gate/slab/vis/setVisible 1<br>/gate/slab/vis/setColor blue<br>/gate/slab/vis/forceWireframe<br>/gate/slab/vis/setColor magenta <br>/gate/slab/vis/forceWireframe</font></div><div><font color="#ff00ff"><br></font></div><div> Secondly, it is also <b>not changing by changing the source energ</b>y. If I change the energy of source, it has no effect on mu_mass coefficient.</div><div><font color="#ff00ff">/gate/source/addSource GammaSource<br>/gate/source/GammaSource/gps/type Volume<br>/gate/source/GammaSource/gps/shape Sphere<br>/gate/source/GammaSource/gps/radius 0.5 cm<br>/gate/source/GammaSource/gps/centre 0. 0. 0. cm<br>/gate/source/GammaSource/attachTo sphere1<br>/gate/source/GammaSource/gps/particle gamma<br>/gate/source/GammaSource/gps/energytype Mono<br>/gate/source/GammaSource/gps/energy 141. keV<br>/gate/source/GammaSource/setActivity 3000. Bq<br>/gate/source/GammaSource/gps/direction 0. 0. 1</font><br></div><div><font color="#ff00ff"><br></font></div><div><font color="#ff00ff"><br></font></div><div>Its value can <b>only change by changing the value of energy inside this actor.</b></div><div><br></div><div dir="ltr" class="gmail-m_852245920530508155gmail_signature"><div dir="ltr"><div><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div>#===================================================<br><font color="#ff00ff">/gate/actor/addActor EmCalculatorActor myEmActor</font><br><font color="#ff00ff">/gate/actor/myEmActor/setParticleName gamma</font><br><font color="#ff00ff">/gate/actor/myEmActor/setEnergy </font><font color="#000000" style="background-color:rgb(255,229,153)"> <b> 141. keV</b></font><br><font color="#ff00ff">/gate/actor/myEmActor/attachTo slab</font><br><font color="#ff00ff">/gate/actor/myEmActor/save output/myEmActor.txt</font><br></div><div><font color="#ff00ff"><br></font></div><div>I will be very happy for your guidance.</div><div> Thanking you.</div><div>Regards</div><div><b style="color:rgb(102,102,102)">HUSSAIN</b><br></div></div></div></div></div></div></div></div></div></div></div>
</blockquote></div><br clear="all"><div><br></div>-- <br><div dir="ltr" class="gmail_signature"><div dir="ltr"><div><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div><br></div><div><br></div><div>Regards</div><div><b style="color:rgb(102,102,102)">HUSSAIN</b><br></div></div></div></div></div></div></div></div></div>