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Keywords: He-4 neutron detectors
Forum: Hadronic Processes
Re: Question Problem with He4 neutron detector simulations (Philippos)
Date: 27 Oct, 2006
From: Laurent Desorgher <desorgher@space.unibe.ch>

Hi Phillipos.

A correction to my last email.
You have to create data files for the inelastic scattering 
of n on He4 in the G4NDL database and not for the elastic physics! 
Data for neutron elastic scattering on He4 are already 
present and nothing has to be changed there.

More precisely copy the files 

G4NDL3.9/Inelastic/CrossSection/2_3_Helium
G4NDL3.9/Inelastic/F23/2_3_Helium
G4NDL3.9/Inelastic/F24/2_3_Helium
 
on the files

G4NDL3.9/Inelastic/CrossSection/2_4_Helium
G4NDL3.9/Inelastic/F23/2_4_Helium
G4NDL3.9/Inelastic/F24/2_4_Helium

and change the file

G4NDL3.9/Inelastic/CrossSection/2_4_Helium

to have very small cross sections,

Below I reproduce the G4NDL3.9/Inelastic/CrossSection/2_4_Helium
that I do use in my simulations.



           0
           0
         3
 0.100000E-04  3.e-10      0.100000E+08  2.e-10      0.200000E+08  1.e-10



Let me know if it works

Best regards



Laurent




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