[fluka-discuss]: RE: Activation calculation - How to manage semi-analogue results

From: Anton Lechner <Anton.Lechner_at_cern.ch>
Date: Fri, 9 Oct 2015 05:43:36 +0000

Dear Gabriele,

Is there a specific reason you don't want to use RADDECAY with "activation study" mode (i.e.WHAT(1)=1), where you have (as you say yourself) all the built-in functionalities to get residual nuclei, residual dose rate etc. for different times t after irradiation?

If you select semi-analogue mode in RADDECAY (i.e. WHAT(1)>1) then you cannot use these built-in functionality to get the residual nuclei at a time t. In that case DCYSCORE can only be used to tell detectors (like USRBIN) to score both prompt and radioactive decay particles together, however this does a priori not contain any time information. On the other hand, selecting semi-analogue mode also doesn't mean that time information is entirely lost: it is still accessible via the age of particles and one could use this information in routines.

Cheers, Anton

From: owner-fluka-discuss_at_mi.infn.it [owner-fluka-discuss_at_mi.infn.it] on behalf of Firpo Gabriele [Gabriele.Firpo_at_ann.ansaldo.it]
Sent: 05 October 2015 16:51
To: fluka-discuss_at_fluka.org
Subject: [fluka-discuss]: Activation calculation - How to manage semi-analogue results

Dear all,

When performing activation calculation with FLUKA, let’s suppose I’m interested in the residual nuclei at a certain time t after irradiation.
If I perform an “activation study” case (RADDECAY with WHAT(1)=1), I have just to associate to WHAT(1) of DCYSCORE the wished time t, previously listed in the DCYTIMES card, and set correspondingly the RESNUCLEI card.
Otherwise, if I perform a “semi-analogue mode” (RADDECAY with WHAT(1)=2), how can I have, for instance, the list of residual nuclei at any time t? I’m confused since I noticed that in this case the WHAT(1) entry of DCYSCORE does not represent any specific time (“semi-analogue” appears in FLAIR there).

Best regards,


Gabriele Firpo
Unità Reattori e Sicurezza – Reactor and Safety Engineer

C.so F.M. Perrone, 25

16152 Genova - Italia

Ph: +39.010.655.83.42



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Received on Fri Oct 09 2015 - 09:35:33 CEST

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