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Re: Question How to define X-ray (wangzhenchao)
Date: 23 Nov, 2012
From: Gumplinger Peter <Gumplinger Peter>

> Hi everyone &#65533;I I want to use Geant4.9.4.P0 to simulate X-ray
> Bremsstrahlung , but I don't know how to defin X-ray and physicsList .
> Which example simulate X-ray ? Can you give me some ideas &#65533;I

An X-ray is a G4Gamma::GammaDefinition() in Geant4. Every PhysicsList will instantiate a G4Gamma for your simulation. There is no such destinction as 'gamma' and 'X-ray'. An X-ray is simply a low energy gamma. While this is true for x-rays, an optical photon is NOT simply an even lower energy gamma. A G4OpticalPhoton is a different Definition() in Geant4. Hope this clarifies the situation.

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