| Summary: | Meaningless dataset for neutron capture process in *_HP physics lists | ||
|---|---|---|---|
| Product: | Geant4 | Reporter: | Artem Zontikov <zontikov.a> |
| Component: | physics_lists | Assignee: | Vladimir.Ivantchenko |
| Status: | RESOLVED FIXED | ||
| Severity: | enhancement | CC: | Gunter.Folger, Vladimir.Ivantchenko |
| Priority: | P4 | ||
| Version: | 10.4 | ||
| Hardware: | All | ||
| OS: | All | ||
Also G4NeutronCaptureXS returns zero cross-section for neutrons with kinetic energy above 20 MeV and therefore shadows GheishaCaptureXS which is tabulated up to 32.7 MeV. Hello, thank you very much for this bug report. The problem is fixed in the development version of Geant4 and will be available with the next public release 10.5, December, 2018. Cannot guarantee if the fix will be backported to the next patch to 10.4. VI |
Hello. Each *_HP physics list (and Shielding) has G4NeutronCaptureXS dataset for neutron capture process. It returns cross-sections for neutrons below 20 MeV and therefore it is not used at all since it is shadowed by NeutronHPCaptureXS. Process: nCapture Model: NeutronHPCapture: 0 eV ---> 20 MeV Model: nRadCapture: 19.9 MeV ---> 100 TeV Cr_sctns: NeutronHPCaptureXS: 0 eV ---> 20 MeV Cr_sctns: G4NeutronCaptureXS: 0 eV ---> 100 TeV Cr_sctns: NeutronHPCaptureXS: 0 eV ---> 20 MeV Cr_sctns: GheishaCaptureXS: 0 eV ---> 100 TeV I think it is better this way: Process: nCapture Model: NeutronHPCapture: 0 eV ---> 20 MeV Model: nRadCapture: 19.9 MeV ---> 100 TeV Cr_sctns: NeutronHPCaptureXS: 0 eV ---> 20 MeV Cr_sctns: GheishaCaptureXS: 0 eV ---> 100 TeV