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Question Generic Ion Problems 

Forum: Particles
Date: 01 Nov, 2007
From: Laura <>


I am sorry for this may sound like a very basic question but 
I am trying to implement an iron beam and for that I did:

In the Physics List:

void ISMPhysicsList::ConstructIons()
    G4IonConstructor iConstructor;

In the Primary Generator Action:

  particleGun = new G4ParticleGun(1);

  G4ParticleTable* particleTable = G4ParticleTable::GetParticleTable();
  G4ParticleDefinition* particleName = particleTable->GetIon(26,56,0.);

And I am getting the following error message:

*** G4Exception : Illegal operation
      issued by : G4IonTable::CreateIon()
Can not create ions in PreInit state
*** This is just a warning message.

*** G4Exception : Event00003
      issued by : G4ParticleGun::SetParticleDefinition()
Null pointer is given.
*** Fatal Exception *** core dump ***

*** G4Exception: Aborting execution ***

I have tried to look the advanced examples but I did not 
find what seems to be the problem...
Does anybody know what am I doing wrong?
Thank you.

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1 None: RE: Generic Ion Problems   (Makoto Asai - 01 Nov, 2007)
1 Agree: RE: Generic Ion Problems   (Laura - 01 Nov, 2007)
2 None: Re: Generic Ion Problems   (Vladimir IVANTCHENKO - 02 Nov, 2007)
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