Message: need to have both fission fragments and delayed neutrons + photofission + spontaneous fission Not Logged In (login)
 Next-in-Thread Next-in-Thread
 Next-in-Forum Next-in-Forum

None need to have both fission fragments and delayed neutrons + photofission + spontaneous fission 

Forum: Hadronic Processes
Date: 04 Feb, 2013
From: <manovos>

 Hello, I am trying to simulate fissile material for reactor/ADS applications and have the following problem: I need to have both fission fragments and delayed neutrons in my simulation. When I use G4ParaFissionModel, I have fission fragments but no delayed neutrons; when I use G4NeutronHPFission - I see delayed neutrons but have no fission fragments. So is there any way to code it up in PhysicsList to have both?
 I currently have the following code for fission:

 // fission

	G4HadronFissionProcess* theFissionProcess = new G4HadronFissionProcess;

	G4ParaFissionModel* theParaFission = new G4ParaFissionModel();
	theParaFission->SetMinEnergy(20.0*MeV);
	theFissionProcess->RegisterMe(theParaFission);

	G4NeutronHPFission* hpFission = new G4NeutronHPFission();
	hpFission->SetMaxEnergy(20.0*MeV);
	G4NeutronHPFissionData* theHPFissionData = new G4NeutronHPFissionData();
	theFissionProcess->AddDataSet(theHPFissionData);
	theFissionProcess->RegisterMe(hpFission);

	pmanager->AddDiscreteProcess(theFissionProcess);

 But it does not give me fission fragments. Also number of gammas from fission is always 1 (whereas if I use G4ParaFissionModel only, I have more-or-less realistic multiplicity of gammas).

 If I try to overlap the energy - it complains with "GetHadronicInteraction: Energy ranges of two models fully overlapping".

 Also to ask everything in one thread - I have two more questions:

1) Is spontaneous fission finally in the package? I see some threads about this on the forum with the latest one being probably this one:

http://hypernews.slac.stanford.edu/HyperNews/geant4/get/hadronprocess/1294/1/1.html

If it is in , I will appreciate references and guides on how to implement it in PhysicsList.

2) The same question for photofission process.

 Thank you in advance.

 Add Message Add Message
to: "need to have both fission fragments and delayed neutrons + photofission + spontaneous fission"

 Subscribe Subscribe

This site runs SLAC HyperNews version 1.11-slac-98, derived from the original HyperNews


[ Geant 4 Home | Geant 4 HyperNews | Search | Request New Forum | Feedback ]