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On Thu, 19 Aug 2010 18:06:32 GMT, Derek Mackay wrote:
> Hello, > > I'm creating photons in a PostStepDoIt. I define my photon as follows: > > G4DynamicParticle* aPhoton = new G4DynamicParticle > (G4OpticalPhoton::OpticalPhoton(),photon_direction,electron_kinetic); > > I define a photon direction G4ThreeVector and then I normalize it as > follows: > > photon_direction = 1./photon_direction.mag()*photon_direction;
If "photon_direction" is really just a momentum vector, you can use
directly in the constructor, no math required. Let the vector do it for you.
-- Michael Kelsey