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Question Creating excited Ions with certain lifetime 

Forum: Particles
Date: 31 Jan, 2013
From: Murat Bayram <Murat Bayram>

Hello,

Im working on my Masters project and have a few problems that might be solveable pretty easy.
Im working on a Geant4 simulation for lifetime measurement of excited nuclear states.

My Setup looks pretty simple. I have a degrader, a detector and a Gun.
What I have so far is the whole Geometry. I managed to make the Gun "shoot" Ions with A,Z and a kinetic Energy towards the degrader. The simulation therefore works fine, same is true for the visualization.
The Code for my gun looks like:

RDMGun::RDMGun() {
ParticleGun= new G4ParticleGun();
G4int Z=20, A=56;
G4double lifetime=0.00001*second;
G4double IonCharge=0*eplus, ExcitEnergy=1.*MeV;
G4ParticleDefinition* Ion=G4ParticleTable::GetParticleTable()->GetIon(Z,A,ExcitEnergy);
ParticleGun->SetParticleDefinition(Ion);
ParticleGun->SetParticleCharge(IonCharge);
ParticleGun->SetParticleMomentumDirection(G4ThreeVector(1.,0.,0.));
ParticleGun->SetParticlePosition(G4ThreeVector(-2.4*m,0,0));
ParticleGun->SetParticleEnergy(700*A*MeV);
}


The problem with this Generator is that it does not create excited Ions. I want Geant4 to create excited Ions that de-excite with the excitation energy I set statistically within the lifetime. Is there a way to create those excited Ions? If no, would it be possible if I change the ParticleGun to the G4GeneralParticlesource? I dont think that something like de-excitation of Ions is not implemented in Geant4.

I read the documentation carefully and did some google searches but could not find any helpful advises, so it would be very nice to get some feedback and/or help.

Regards,

Murat Bayram
 

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1 None: Re: Creating excited Ions with certain lifetime   (michel maire - 01 Feb, 2013)
1 Question: Re: Creating excited Ions with certain lifetime   (Murat Bayram - 01 Feb, 2013)
(_ None: Re: Creating excited Ions with certain lifetime   (michel maire - 02 Feb, 2013)
(_ Question: Re: Creating excited Ions with certain lifetime   (Murat Bayram - 04 Feb, 2013)
(_ None: Re: Creating excited Ions with certain lifetime   (michel maire - 04 Feb, 2013)
2 None: Re: Creating excited Ions with certain lifetime   (Qiang - 09 May, 2013)
1 None: Re: Creating excited Ions with certain lifetime   (Murat Bayram - 10 May, 2013)
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