Problem 1818 - G4ParticleHPInelasticCompFS major issues
Summary: G4ParticleHPInelasticCompFS major issues
Status: RESOLVED MOVED
Alias: None
Product: Geant4
Classification: Unclassified
Component: processes/hadronic/models/neutron_hp (show other problems)
Version: 10.2
Hardware: All All
: P5 major
Assignee: dennis.herbert.wright
URL:
Depends on:
Blocks:
 
Reported: 2016-01-22 17:13 CET by osipenko
Modified: 2019-06-24 19:48 CEST (History)
1 user (show)

See Also:


Attachments
patched source files (22.90 KB, application/x-gzip)
2016-01-22 17:13 CET, osipenko
Details

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Description osipenko 2016-01-22 17:13:38 CET
Created attachment 376 [details]
patched source files

There are a lot of major issues in G4ParticleHPInelasticCompFS, few examples:

1. gammas are generated from all (n,n') excited states, also those which decay alpha o p,n,d,t,h etc.

2. all continuum inelastic channels MT=91,649,699,749,799,849 made decay elastically with gamma emission. Instead these are perhaps break-up reactions involving lighter nuclei, not gammas.

3. for A(n,p,d,t,h,a)B* reactions levels refer to a different nucleus (B* with Z'=Z,Z-1,Z-2, A'=A,A-1,A-2,A-3), so we need not only the table of levels for the current nucleus A, but also for other 5 nuclei possible (not corrected!).

4. G4ParticleHPAngular recalculates hadron momentum, which is fixed in G4ParticleHPInelasticCompFS, I added a flag to tell it to keep the existing momentum, although not yet checked with other routines calling it. Perhaps G4ParticleHPAngular need further improvements.

5. G4ParticleHPEnAngCorrelation does not care about energy/momentum conservation, its a pain to see all these gammas. Perhaps reworking it in CM frame could fix that (not corrected!).

6. Be8 has not decay table!

There is a lot of debugging prints in the proposed code, but it is working. I can try to improve this but I need a feedback (I am focused only on my experiment).
Comment 1 tkoi 2016-06-29 03:04:00 CEST
Thank you for reporting this problem.
Now we are working on this issue.
I will let you know once we have progress.

Tatsumi
Comment 2 dennis.herbert.wright 2019-06-24 19:48:06 CEST
This will become a development item.