Problem 1563 - Nuclear interaction length of liquid deuterium
Summary: Nuclear interaction length of liquid deuterium
Status: RESOLVED FIXED
Alias: None
Product: Geant4
Classification: Unclassified
Component: materials (show other problems)
Version: 9.6
Hardware: All All
: P5 trivial
Assignee: Marc.Verderi
URL:
: 1564 (view as problem list)
Depends on:
Blocks:
 
Reported: 2014-01-24 01:29 CET by Markus Diefenthaler
Modified: 2014-12-16 17:07 CET (History)
2 users (show)

See Also:

Attachments
Add an attachment (proposed patch, testcase, etc.)

Note You need to log in before you can comment on or make changes to this problem.
Description Markus Diefenthaler 2014-01-24 01:29:53 CET 
For liquid deuterium, the function GetNuclearInteractionLength() returns a value of about 262cm. The Particle Data Group (PDG) stats a value of 424.7cm (the value has changed in the latest years): 

   http://pdg.lbl.gov/2013/AtomicNuclearProperties/HTML_PAGES/299.html 

Could you please update the value? Is there an user function to change the value (so that GetNuclearInteractionLength() returns the PDG values?
Comment 1 Marc.Verderi 2014-02-03 17:22:29 CET 
*** Problem 1564 has been marked as a duplicate of this problem. ***
Comment 2 Vladimir.Ivantchenko 2014-05-12 20:13:52 CEST 
Hello,

this value is not used in Geant4 tracking, this is only approximate value computed via trivial formula. May be used only for very qualitative estimations. 

To avoid confusions in the material printout a comment "not used" is added.

If true cross section or interaction length is needed, please, use G4HadronicCrossSectionStore() interface, see Hadr00 extended example.

VI
Comment 3 Marc.Verderi 2014-12-16 17:07:46 CET 
Information needed to clarify the case has been provided.