[fluka-discuss]: TOTAL FLUENCE

From: riya dey <riyadey_at_barc.gov.in>
Date: Wed, 27 Jun 2018 12:17:08 +0530

Dear FLUKA Experts,

 

I was modelling a hemispherical cloud source ( radius = 10 m) emitting
photons isotropically. Below the cloud, a detector is placed at ( 0,0,200
cm) with radius R= 200 cm. Now, using USRBDX surface crossing fluence rate
is estimated in the detector. If we change the energy emitting from the
source , lets say for 0.1 MeV , 0.5 MeV , 1 MeV , then although the fluence
distribution with energy is different , the total no of particles crossing
the detector surface should be nearly same. But total fluence from FLUKA
results are different for different energy.

 

What might be the reason for this ?

 

The input files for 0.1 MeV is attached here. The outputs (sum.lis) for 0.1
MeV and 0.5 MeV are :

 

Total fluence per cmq per primary for 0.1 MeV is = 3.59 E-7 (one-way
scoring) , for 0.5 MeV is = 4.73 E-8 (one way scoring)

 

 

With regards,

Riya Dey





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Received on Wed Jun 27 2018 - 18:18:53 CEST

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