<div dir="ltr">Dear GATE users,<div><br></div><div>I am trying to make a simulation of the radioluminescence phenomenon when alpha particles cross the air.</div><div><br></div><div>Alpha particles make ionisations into the air and produce électrons. These electrons must interact with the dinitrogen molecules of the air to create UV photons with a known UV spectrum.</div><div><br></div><div>In the physics part of my macro, I use :</div><div><br></div><div># ** electron interaction<br>/gate/physics/addProcess ElectronIonisation<br>/gate/physics/processes/ElectronIonisation/setModel StandardModel e-<br>/gate/physics/processes/ElectronIonisation/setModel StandardModel e+<br>/gate/physics/addProcess Bremsstrahlung<br>/gate/physics/processes/Bremsstrahlung/setModel StandardModel e-<br>/gate/physics/processes/Bremsstrahlung/setModel StandardModel e+<br>#/gate/physics/addProcess PositronAnnihilation<br>/gate/physics/addProcess eMultipleScattering e+<br>/gate/physics/addProcess eMultipleScattering e-<br><br># ** alpha interaction<br>/gate/physics/addProcess IonIonisation<br>/gate/physics/addProcess hMultipleScattering alpha<br></div><div><br></div><div># ** Optical photons<br>/gate/physics/addProcess OpticalAbsorption<br>/gate/physics/addProcess OpticalRayleigh<br>/gate/physics/addProcess OpticalBoundary<br>/gate/physics/addProcess OpticalMie<br>/gate/physics/addProcess OpticalWLS<br>/gate/physics/addProcess Scintillation<br></div><div><br></div><div>In the Materials.xml file, I add the WLS features in the material "air"</div><div><br></div><div><propertyvector name="RINDEX" energyunit="eV"><br> <ve energy="1.84" value="1.000277"/><br> <ve energy="6.2" value="1.000277"/><br> </propertyvector><br> <propertyvector name="WLSABSLENGTH" unit="cm" energyunit="eV"><br> <ve energy="0" value="0"/><br> <ve energy="4" value="0"/><br> </propertyvector><br> <propertyvector name="WLSCOMPONENT" energyunit="eV"><br> <ve energy="3.05" value="0.007"/><br> <ve energy="3.25" value="0.022"/><br> <ve energy="3.47" value="0.067"/><br> <ve energy="3.68" value="0.1"/><br> <ve energy="3.92" value="0.067"/><br> <ve energy="4.16" value="0.012"/><br> <ve energy="4.39" value="0.005"/><br> <ve energy="4.61" value="0.0005"/><br> </propertyvector><br> <property name="WLSTIMECONSTANT" value="0.1" unit="ns"/><br> </propertiestable><br></div><div><br></div><div>The method I used didn't work. No UV photons were emitted. Where am I wrong ? Have you ever made this kind of simulation ?</div><div><br></div><div>Thank you for your help.</div><div>Déborah</div><div><br></div><div><br></div></div>
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