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None Z=2,A=2 element isn't in G4NuP 

Keywords: neutron, G4Nup
Forum: Hadronic Processes
Date: 28 Jun, 2006
From: <>

Hi, I simulate n+He3->H3+H1 reaction for neutron detector. when I run my code, sometimes I see the following error messager in screen. However, the code is still running within this error. Would anybody tell me what's mean of the messager?

"G4PhotoNucCrossSect.hh::ThreshEn:Z=2,A=2 element isn't in G4NuP"

My experiment setting is He3 gas neutron detector around graphite shield. primary neutron energy is 100 keV-900keV. I use LHEP_PRECO_HP for my physicslist. My material is :

G4Isotope* He3 = new G4Isotope(name="He3", iz=2, n=3, a=3*g/mole);
  G4Element* elHe  = new G4Element(name="helium3", symbol="He", ncomponents=1);
  elHe->AddIsotope(He3, abundance= 100.*perCent);

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