Dear Mehdi
I see two suggestions for your problem.
First concerning the production be sure to use pointwise cross section for B-10 (see the corresponding section of the manual):
10.3.3} Generation of charged particles
Recoil protons and protons from N(n,p) reaction are produced and
transported explicitly, taking into account the detailed kinematics
of elastic scattering, continuous energy loss with energy straggling,
delta ray production, multiple and single scattering.
The same applies to light fragments (alpha,3-H) from neutron
capture in 6-Li and 10-B, if pointwise transport has been
requested by the user. All other charged secondaries, including
fission fragments, are not transported but their energy is deposited
at the point of interaction (kerma approximation).
Now concerning the thickness of your target, I suggest to pay attention to the threshold for delta ray production (see command DELTARAY) and the transport threshold for electron /positron.
https://indico.cern.ch/event/334606/contribution/9/attachments/653346/898375/AdvancedSettings2014.pdf
Greetings
Joachim
From: owner-fluka-discuss_at_mi.infn.it [mailto:owner-fluka-discuss_at_mi.infn.it] On Behalf Of Mehdi Hoseininaveh
Sent: 13 October 2015 12:10
To: fluka-discuss_at_fluka.org
Subject: [fluka-discuss]: Minimum thickness of a layer in the target
Dear FLUKA experts/users,
I have simulated a thin layer of B-10 between to layer of alanine material as a target. The target was bombarded with a thermal neutron beam and the amount of energy deposited by alpha and lithium particles produced due to neutron absorption of boron nuclei was recorded in alanine cells. In order to obtain the maximum energy deposition in alanine, the thickness of B-10 layer was selected to be from zero to 10 micrometers and optimum thickness of 2 micrometers was obtained.
Now, I have two questions:
Does FLUKA have reliable output if the thickness of the target is only several micrometers?
Is there any special parameters or things I need to be aware when i am using FLUKA
with such thin targets?
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Received on Sat Oct 17 2015 - 10:26:19 CEST