Problem 713

Summary: Gamma-, electro-nuclear cross section bias incorrect
Product: Geant4 Reporter: dennis.herbert.wright
Component: processes/hadronicAssignee: Hans-Peter.Wellisch
Status: RESOLVED WORKSFORME    
Severity: normal CC: lockman
Priority: P2    
Version: other   
Hardware: All   
OS: All   

Description dennis.herbert.wright 2005-01-14 17:58:22 CET
In G4HadronicPorcess::BiasCrossSectionByFactor(G4double aScale) the code to
limit the size of the scale factor is incorrect.  Instead of checking

      if(aScale<100)

it should be

      if(aScale>100)

This occurs in Geant4 7.0 and previous releases as well.
Comment 1 Hans-Peter.Wellisch 2005-02-22 04:16:59 CET
This is actually the correct behaviour. There are a few approximations in the
formalism used that make it such that the algorithm works accurately for safely
high values of bias. We use a cutoff of 100.

Many greetings,

Hans-Peter.