Hi Viktor,
for scintillation light in FLUKA, for the moment, only monochromatic
photons are considered, with a maximum of 3 different lines.
Optical photons are treated differently from the high energy photons and
from the other particles: for example it is not possible to use them as
primary particles nor it is possible to define them in a source.f
routine and assign their energy.
However, you can perhaps try a non-standard source_opt.f routine,
as suggested in this old message in the forum:
http://www.fluka.org/web_archive/earchive/new-fluka-discuss/3272.html
This might suit your needs.
Cheers,
Andrea
Il 21/02/2017 13:43, Віктор Родін ha scritto:
> Dear Andrea,
> Thank you for reply. I understand that we use OPT routines when
> wavelenth is varied. I have another question related to the production
> of photons . Is it possible to set the scintillation spectrum in
> FLUKA?The simplest way is setting of huge number of OPT-PROD cards
> with different % of dose for each energy. Do we have another way?
> Cheers,
> Viktor
>
> 2017-02-21 8:17 GMT+02:00 Andrea Fontana <andrea.fontana_at_pv.infn.it
> <mailto:andrea.fontana_at_pv.infn.it>>:
>
> Dear Viktor,
> indeed data cards for optical photons allow to define the optical
> properties in materials and at boundaries only for specific
> frequencies, as you say, while user routines are more general and
> allow
> to give a more complete representation of the physical problem.
>
> For example, the refraction index can be defined with the OPT-PROP
> card for the central frequency that one has defined, but for an
> extended
> dispersion relation, one can use the routine RFRNDX implementing a
> function or interpolating a data array.
> The refraction index can also be varied with a region-based logic
> using
> the function OPHBDX. The same applies also to the other optical
> properties like absorption and diffusion coefficients.
>
> For a complete example, if you have not found it already,
> you can refer to this message by Giuseppe:
>
> http://www.fluka.org/web_archive/earchive/new-fluka-discuss/7106.html
> <http://www.fluka.org/web_archive/earchive/new-fluka-discuss/7106.html>
>
> It well complements the information from the manual.
> Hope this helps.
>
> Kind regards,
> Andrea
>
>
> Il 18/02/2017 16:47, Віктор Родін ha scritto:
>
> Dear FLUKA users and experts,
> I'm working with optical photons in FLUKA and discover new
> details for myself in the process. Now I have a question
> connected with physics of the optical boundaries. Is it
> enough set reflectivity, absorption, diffusion and
> refractive coefficients in the OPT-PROP card for receiving of
> the truthful results in the region borders ?For what goals
> should we use OPT-routines, for example OPHBDX? I think that
> other OPT routines we use if wavelength isn't constant. Is it
> true?Could you explain me difference?
> Best regards,
> Viktor
>
>
> --
> ========================================================================
> Dr. Andrea Fontana tel: +39 0382 987991
> <tel:%2B39%200382%20987991>
> Istituto Nazionale fax: +39 0382 423241
> <tel:%2B39%200382%20423241>
> di Fisica Nucleare
> Sezione di Pavia e-mail:
> andrea.fontana_at_pv.infn.it <mailto:andrea.fontana_at_pv.infn.it>
> Via Bassi 6 web :
> www.pv.infn.it/~fontana <http://www.pv.infn.it/%7Efontana>
> 27100 PAVIA, Italy
> ========================================================================
>
>
--
========================================================================
Dr. Andrea Fontana tel: +39 0382 987991
Istituto Nazionale fax: +39 0382 423241
di Fisica Nucleare
Sezione di Pavia e-mail: andrea.fontana_at_pv.infn.it
Via Bassi 6 web : www.pv.infn.it/~fontana
27100 PAVIA, Italy
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Received on Tue Feb 21 2017 - 15:37:55 CET