Re: [fluka-discuss]: energy deposition for 3MeV protons

From: George Kharashvili <>
Date: Tue, 29 Jul 2014 08:30:53 -0400 (EDT)

Dear Tristan,

Much depends on which default you are using. If you have NEW-DEFA, or no DEFAULT card at all, particle transport threshold is set at 10 MeV.
It is always recommended to attach input files to questions sent to this list.

George Kharashvili
Jefferson Lab Radiation Control
----- Original Message -----
From: "tristan davenne" <>
Sent: Tuesday, July 29, 2014 5:29:08 AM
Subject: [fluka-discuss]: energy deposition for 3MeV protons
Hi, I am trying to calculate the energy deposition of 3MeV protons impinging on various metals, the energy is deposited within a depth of a fraction of a mm depending on the metal. I am using FLUKA with the default settings so low energy neutron library activated. 
I find the energy deposition as a function of depth looks quite flat without the significant bragg peak that was expected. Can someone explain why I am not seeing a sharp bragg peak at this energy? 
Many Thanks 
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Received on Tue Jul 29 2014 - 15:58:45 CEST

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