Problem 1939

Summary: Issue with physics list "shielding" - presumably due to radioactive decays - in combination with importance sampling
Product: Geant4 Reporter: Raphael Mameghani <raphael.mameghani>
Component: processes/hadronic/models/radioactive_decayAssignee: desorgher
Status: RESOLVED DUPLICATE    
Severity: normal CC: asai
Priority: P4    
Version: 10.3   
Hardware: PC   
OS: Linux   

Description Raphael Mameghani 2017-02-06 13:03:57 CET 
If the physics list "Shielding" is combined with the importance sampling technique there is a huge excess of gamma radiation in the MeV region - in contrast to other physics list such as "QGSP_BERT_HP" or "QGSP_BIC_HP". A closer inspection revealed that these gammas originate from radioactive decays. I also saw that the extra gammas all have a weight of 1 whereas other particles (mainly neutrons and gammas from other sources) have weights in the order of 10^-4 at this position. Presumably the radioactive decay ignores the weight of the neutron which activated the atomic nucleus.
Comment 1 asai 2017-03-14 22:37:00 CET 

*** This problem has been marked as a duplicate of problem 1946 ***