Problem 713 - Gamma-, electro-nuclear cross section bias incorrect
Summary: Gamma-, electro-nuclear cross section bias incorrect
Status: RESOLVED WORKSFORME
Alias: None
Product: Geant4
Classification: Unclassified
Component: processes/hadronic (show other problems)
Version: other
Hardware: All All
: P2 normal
Assignee: Hans-Peter.Wellisch
URL:
Depends on:
Blocks:
 
Reported: 2005-01-14 17:58 CET by dennis.herbert.wright
Modified: 2005-02-22 04:15 CET (History)
1 user (show)

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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.