Problem 1939 - Issue with physics list "shielding" - presumably due to radioactive decays - in combination with importance sampling
Summary: Issue with physics list "shielding" - presumably due to radioactive decays - ...
Status: RESOLVED DUPLICATE of problem 1946
Alias: None
Product: Geant4
Classification: Unclassified
Component: processes/hadronic/models/radioactive_decay (show other problems)
Version: 10.3
Hardware: PC Linux
: P4 normal
Assignee: desorgher
URL:
Depends on:
Blocks:
 
Reported: 2017-02-06 13:03 CET by Raphael Mameghani
Modified: 2017-03-14 22:37 CET (History)
1 user (show)

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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 ***