Date: Fri, 9 Oct 2015 06:42:48 +0000
Dear Anton,
First of all, thank you very much for your useful and clear answer.
The reason why I asked that question was just because I thought that "activation study" (Monte Carlo + Bateman) and "semi-analogue" (full Monte Carlo) could be run independently in a specific case in order to compare the results of residual nuclei at time t, and see whether some differences appears with these two methods.
I understand now from your explanation that:
1 - The amount of prompt and radioactive decay particle are "time-integrated" in semi-analogue mode.
2 - However, in semi-analogue mode the age of particles is stored somewhere and, in principle, the amount of residual nuclei could be obtained at any time t .
Now my question is: how to get this time information in routines?
Best regards,
[S_ORANGE_Logo_Ansaldo_Nucleare_2014]
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
www.ansaldonucleare.it<http://www.ansaldonucleare.it/>
gabriele.firpo_at_ann.ansaldo.it<mailto:gabriele.firpo_at_ann.ansaldo.it>
Da: Anton Lechner [mailto:Anton.Lechner_at_cern.ch]
Inviato: venerdì 9 ottobre 2015 07:44
A: Firpo Gabriele; fluka-discuss_at_fluka.org
Oggetto: RE: Activation calculation - How to manage semi-analogue results
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<mailto: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<mailto: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,
[S_ORANGE_Logo_Ansaldo_Nucleare_2014]
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
www.ansaldonucleare.it<http://www.ansaldonucleare.it/>
gabriele.firpo_at_ann.ansaldo.it<mailto:gabriele.firpo_at_ann.ansaldo.it>
P
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