the missing x-rays?

From: 邓敏维 <dengmw_at_student.sysu.edu.cn>
Date: Fri, 20 May 2011 14:45:56 +0800 (CST)

Dear all,

Now I am using a neutron source (with energy equals about 1ev).
The target is Gd2O3(the mass number of Gd is 156).
Basically,the reaction is as follows:
Gd-156 + n -> Gd-157(*)
Gd-157(*) -> Gd-157 + gamma .
And Gd-157* has a probability of emitting internal conversion electrons and the
associated x-rays,which leads to
Gd-157(*) -> Gd-157 + conversion e + x-ray .
And it is referred that the energy of these x-rays range
from about 30 kev to 350 kev.I use FLUKA to simulate this process.
I detect the garma fluence transporting from Gd2O3 to Al2O3
(both are regions in my input files), but no gamma with the energy
lower than about 300 kev is detected.
So where are the missing x-rays?
My input files and output files are attached.

Yours,
Danny

Received on Fri May 20 2011 - 10:13:06 CEST

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