hi dear experts,
I’ve been trying to simulate DD and DT fusion with Hadr03 Example.
despite the approximately same cross-section between DD and DT fusion at 900keV, there is no neutron production in simulation for DD reaction.
this is the output for DT fusion
The run is 100000 deuteron of 900 keV through 100 km of tritium (density: 5 mg/cm3)
Process calls frequency:
dInelastic= 100000MeanFreePath: 37.887 m ± 38.049 m massic: 18.943 g/cm2
CrossSection: 0.00026395 cm^-1 massic: 5.2789 mm2/g
crossSection per atom: 264.41 mbarnVerification: crossSections from G4HadronicProcessStore:
dInelastic= 5.292 mm2/g 265.07 mbarn
total= 5.292 mm2/g 265.07 mbarnList of nuclear reactions:
deuteron + tritium --> neutron + alpha: 100000 Q = 17.59 MeV
List of generated particles:
alpha: 100000 Emean = 3.9554 MeV ( 1.9056 MeV → 6.01 MeV)
neutron: 100000 Emean = 14.534 MeV ( 12.48 MeV → 16.584 MeV)
and this output for DD fusion
The run is 100000 deuteron of 900 keV through 100 km of deuteron (density: 5 mg/cm3)
Process calls frequency:
dInelastic= 100000MeanFreePath: 40.176 m ± 40.348 m massic: 20.088 g/cm2
CrossSection: 0.00024891 cm^-1 massic: 4.9782 mm2/g
crossSection per atom: 166.49 mbarnVerification: crossSections from G4HadronicProcessStore:
dInelastic= 4.9905 mm2/g 166.91 mbarn
total= 4.9905 mm2/g 166.91 mbarnList of nuclear reactions:
deuteron + deuteron --> 2 deuteron: 94661 Q = 0.00025005 meV deuteron + deuteron --> N gamma or e- + alpha: 5339 Q = 23.847 MeV number of gamma or e- (ic): N = 1 --> 2
List of generated particles:
alpha: 5339 Emean = 519.56 keV ( 151.2 keV → 900.77 keV)
deuteron: 189322 Emean = 450 keV ( 20.53 eV → 899.98 keV)
gamma: 6386 Emean = 20.255 MeV ( 4.0223 MeV → 24.596 MeV)
can Geant4 simulate DD fusion?
am I should use another physicsList for DD fusion?
this is cross-section of these fusions
Ongena, J., 2015. Fusion: A true challenge for an enormous reward. In EPJ Web of Conferences (Vol. 98, p. 05004). EDP Sciences.
I’m using Geant4 11.0