Message: neutron elastic process Not Logged In (login)
 Next-in-Thread Next-in-Thread
 Next-in-Forum Next-in-Forum

None neutron elastic process 

Forum: Hadronic Processes
Date: 13 Aug, 2009
From: <ticesty>

I am trying to model the efficiency of a BC-501 type neutron detector, with neutron energies ranging up to 20 MeV. So I am shooting neutrons at a can of BC-501 ~ 6" diameter and 8" long.

Because I of course include elastic processes in my physics list, I would expect that the maximum energy a neutron could lose in its first interaction is equal to the neutron's incident energy. This is in fact seen in a 2-d histogram of energy deposited in the first interaction vs. incident neutron energy (attached, ignore y-axis label, it should read single interaction energy deposit (MeV)).

However, this trend continues until just below 9 MeV incident energy. At this point and above the maximum energy that can be deposited in one interaction remains constant at just below 9 MeV. Why does this happen?

For reference, the hadronic elastic process I use is G4HadronElasticProcess, using G4NeutronHPElastic for 0 to 20 MeV and G4LElastic above 20 MeV.


 Add Message Add Message
to: "neutron elastic process"

 Subscribe Subscribe

This site runs SLAC HyperNews version 1.11-slac-98, derived from the original HyperNews

[ Geant 4 Home | Geant 4 HyperNews | Search | Request New Forum | Feedback ]