Problem 306

Summary:	A problem with the backscatering
Product:	Geant4	Reporter:	alberto
Component:	processes/electromagnetic	Assignee:	Michel.Maire
Status:	CLOSED INVALID
Severity:	normal
Priority:	P2
Version:	1.0
Hardware:	PC
OS:	Linux

Description alberto 2001-10-02 12:02:43 CEST

In one of my simulations, a 511 kev gamma beam goes through a lead plate
(100um). All the produced electrons go forward while there are not back
electrons. I think that the code is OK, and the problem is in the geant
toolkit.
Is that possible?
Does the toolkit describe well this kind of interactions?

Comment 1 Hans-Peter.Wellisch 2001-10-03 02:36:59 CEST

Hi Michel,

  can you please have a look at this one?

Many greetings,

Hans-Peter.

Comment 2 Laszlo.Urban 2001-11-15 09:32:59 CET

in the simulation desribed there are very few electrons coming out of the
absorber even forward, most of the secondaries are absorbed in the lead.
However in my simulation using TestEm5 there are electrons
going in bacward direction, so the problem (if any) is fixed.