RE: [fluka-discuss]: Neutron cross section

From: Jonathan Derrien <>
Date: Thu, 20 Feb 2014 14:42:16 +0100

Hello Vittorio,
Thank you to trying to answer my question. Well, for neutron with energies below 20 MeV, cross-section libraries are used. These cross-sections can be seen by using the command LOW-NEUT. Have you any idea about how compute the activation cross-section thanks to the data given by LOW-NEUT?

Date: Thu, 20 Feb 2014 14:26:53 +0100
Subject: Re: [fluka-discuss]: Neutron cross section

Dear Jonathan,
What do you exactly mean with "data used by Fluka, I'm not sure if I'm mislead by the name but I had some memories that those could be the probabilities of emission of a neutron and a proton (Pnp) and the one for the emission of a neutron and an alpha (Pna).

best, V.

On Thu, Feb 13, 2014 at 10:55 AM, Jonathan Derrien <> wrote:

I'm using the data used by Fluka for the low neutron and I found among the cross section and different probabilities two probabilities: PNP and PNA. I do not see what it is, so what is their meaning? Moreover, does anyone know how from these data to determine the activation cross section?
Jonathan Derrien
Received on Thu Feb 20 2014 - 16:44:36 CET

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