Problem 2328

Summary: Energy conservation law is not obeyed
Product: Geant4 Reporter: Efstathia Georgali <georgal.efi>
Component: processes/hadronic/modelsAssignee: dennis.herbert.wright
Status: ASSIGNED ---    
Severity: major CC: Vladimir.Ivantchenko
Priority: P4    
Version: 10.6   
Hardware: All   
OS: All   
Attachments: In the attached figure you can see the neutron spectrum when a 3.51 MeV deuteron beam impinges on a Tritium target. In this case neutrons with unnatural energies above 20 MeV are produced.

Description Efstathia Georgali 2021-02-08 09:51:25 CET
Created attachment 670 [details]
In the attached figure you can see the neutron spectrum when a 3.51 MeV deuteron beam impinges on a Tritium target. In this case neutrons with unnatural energies above 20 MeV are produced.

Dear Sir/Madam,

I would like to report the following two problems:

1. When I simulate the 2H(d,n)3He (DD) and 3H(d,n)4He (DT) fusion reactions, I notice that some of the produced neutrons have unnatural energies. For example, in the attached figure you can see the neutron spectrum when a 3.51 MeV deuteron beam impinges on a Tritium target. In this case neutrons with unnatural energies above 20 MeV are produced. 

2. When I simulate the deuteron break-up of the 2H+n interaction, the produced protons have also unnatural energies.

In both cases it seems that the energy conservation law is not obeyed.
Comment 1 dennis.herbert.wright 2021-02-10 21:40:30 CET
Please tell us which physics list you are using.
Comment 2 Efstathia Georgali 2021-03-01 09:22:07 CET
The physics list that I use is the QGSP_BIC_AllHP
Comment 3 Vladimir.Ivantchenko 2024-04-29 12:53:40 CEST
Hello,

can you, please,  try out QBBC or QGSP_BIC Physics Lists?

VI