[Gate-users] step function help

[Yann PERROT]

Dear Andrea,

"e+ 0.2 .1 mm" means that while the range of the positron is above 100 µm
you dont't allow the stopping range to decrease by more than 20% per step.
A description of electromagnetic options is given in the wiki but you can
find more details in the Geant4 Physics Reference Manual:
http://geant4.cern.ch/support/userdocuments.shtml

We usually have same values for electrons and positrons.

I remind you that if you have a doubt about the physics to use, physics
list builders (since GATE v7.0) is a way to be sure of the optimal
electromagnetic options.

Bests,

Yann


From: andreita_5_92 at hotmail.com
To: gate-users at lists.opengatecollaboration.org
Date: Tue, 24 Mar 2015 12:43:02 +0000
Subject: [Gate-users] step function help

hello!
I'm trying to use the step function for electroionisation proces and for
positrons, but I don't understand how it works...
Example:
/gate/physics/processes/ElectronIonisation/setStepFunction e+ 0.2 .1 mm
Can somebody please help me?
And for positrons, wich is the correct range?
Thank you!