|Message: Re: How can I define the radioactive decay of Tc-99m to Tc-99?||Not Logged In (login)|
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On Wed, 20 Feb 2019 11:59:17 GMT, Georgios Savvidis wrote:
> Hello everyone! > > I am trying to simulate the radioactive decay of the metastable isotope > Tc-99m and I use the following code. > > G4int Z = 43, A = 99; > G4double ionCharge = 0.*eplus; > G4double excitEnergy = 142.6833*keV; > > G4ParticleDefinition* ion > = G4ParticleTable::GetParticleTable()->GetIon(Z,A,excitEnergy); > > Moreover, I read the answer of a relevant question in the forum, and I > used also the command > > /grdm/nucleusLimits 100 100 43 43 > > as the answer suggested. However, in my simulation I see plenty of > electrons, and only about 4-5% of gammas instead to observe the pure > decay of Tc-99m to Tc-99. So, I suppose the simulation reflects the > decay of Tc-99m to Tc-99 and Ru-99 and no only the decay to Tc-99. Does > anyone knows how can I fix the problem and simulate only the decay of > Tc-99m to Tc-99? I will appreciate any help :) >
1- the attached macro (for rdecay01) shows that the command /grdm/nucleusLimits has same effect that fullChain = false
2- It is true that, in 10.4, the number of internal conversions is rather big : ~97%. This number seems to me suspicious. I do not know if it has been updated or not in 10.5.
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