Dear Agnieszka,
> when I am using option BEAM/SDUM=ISOTOPE, what will be my BEAM/WHAT(1)
> energy? Will it be the energy of the main energy line for the isotope?
no, it's meaningless, see the manual (BEAM card, SDUM).
> Is it also mandatory to use card DCYSCORE while using
> RADDECAY/WHAT(1)=Semi-Analogue?
yes, but read carefully the manual (BEAM card, note 8)
Best
Francesco
**************************************************
Francesco Cerutti
CERN-EN/STI
CH-1211 Geneva 23
Switzerland
tel. +41 22 7678962
fax +41 22 7668854
On Tue, 3 Oct 2017, Agnieszka Witkowska wrote:
> Dear Francesco,
> Thank You a lot for advise, radioactive source is exactly the option I was looking
> for! I have one additional question as I am a little bit confused, when I am using
> option BEAM/SDUM=ISOTOPE, what will be my BEAM/WHAT(1) energy? Will it be the
> energy of the main energy line for the isotope?
>
> Is it also mandatory to use card DCYSCORE while using
> RADDECAY/WHAT(1)=Semi-Analogue?
>
> Thank You for your help in advance.
>
> Best regards,
> Agnieszka Witkowska
>
> 2017-10-02 12:05 GMT+02:00 Francesco Cerutti <Francesco.Cerutti_at_cern.ch>:
>
> Dear Agnieszka,
>
> are you interested in decay alphas? Or photons and electrons?
> The latter ones can be directly obtained - all along the decay chain -
> by implementing in the input file your Ra isotope as radioactive
> source (BEAM/SDUM=ISOTOPE, HI-PROPE with respective Z and A,
> RADDECAY/WHAT(1)=2.0 i.e. semi-analogue), with no need for the source
> user routine.
>
> Conversely, for the alphas - with the present FLUKA version - you
> actually need to implement your source.f, which is more challenging.
>
> 3. source.f requires several variables (weight, polarization, ...) to
> be set, but they are already filled by default, so you shall change
> only the ones relevant to your case (i.e. the particle kinetic
> energy/momentum)
>
> 2. decay spectrum data are available for instance at
> http://www.nndc.bnl.gov/
> An external file can be in whatsoever format, since it's up to you to
> properly read its content inside source.f and appropriately store the
> relevant info.
>
> 1. if you are interested in sampling decay alphas, you should set in
> the BEAM card 4-HELIUM as beam particle and assign in source.f its
> kinetic energy and momentum according to your data, selecting a fixed
> experimental energy value on the basis of the respective branching
> ratio. This requires some programming skills.
>
> Kind regards
>
> Francesco
>
> **************************************************
> Francesco Cerutti
> CERN-EN/STI
> CH-1211 Geneva 23
> Switzerland
> tel. +41 22 7678962
> fax +41 22 7668854
>
> On Sun, 1 Oct 2017, Agnieszka Witkowska wrote:
>
> Dear Fluka Users,
> I am the beginner in terms of Fluka usage and I am trying
> to implement spectrum of radium
> as a beam by using user routine source.f. I have read
> manual and Fluka courses
> presentations, however it is still not clear for me how to
> implement such feature. Can You
> please help me with questions below?
>
> 1. How to assign beam to the data read from the file?
> 2. Can You please advise where can I find files with
> spectrum properties? As I understand
> files which can be included in source routine should be in
> collision type?
> 3. I would like to modify only the energy of the beam to
> create spectrum as a source. Do I
> have to include in the source routine other parameters
> definitions like weight of the
> particle, polarization etc. or I can omit them and the
> routine will work?
>
> Thank You for your help in advance.
>
> Best regards,
> Agnieszka Witkowska
>
>
>
>
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Received on Tue Oct 03 2017 - 23:28:41 CEST