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Question Polarized photons 

Forum: Electromagnetic Processes
Date: 19 May, 2009
From: <farnea@pd.infn.it>

I am trying to evaluate the response of my detectors to linearly polarized photons emitted with isotropical distribution from a point source. I have included the relevant processes (G4PolarizedComptonScattering or G4LowEnergyPolarizedCompton) in my PhysicsList. I understand I should now define a polarization vector which should be passed to the G4ParticleGun via the SetParticlePolarization method. I cannot understand whether should I pass the Stokes vector in the particle frame or should I transform it to the World frame (the Stokes "vector" should transform differently than a standard vector, as far as I know). Anybody can give me suggestions? Any good example?

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