dear experts, unfortunately I can't find it in my fluka and in the
interface
Flair graphics the LOW-PWXS card, the fluka version is version 2011.2x-6
the flair version:2.3-0
can you help me?
Annamaria
Il 2024-03-18 17:05 muoio ha scritto:
> Thanks, I'll try the advice
> Annamaria
> Il 2024-03-18 16:47 Paola Sala ha scritto:
>> Dear Annamaria
>> Probably I do not understand correctly your question, I'll try some
>> hints:
>> You do not need anything specifics for alphas, besides the low-pwxs.
>> The PRECISION default already activates the transport of all ions,
>> and the transport of neutrons down to thermal.
>> LOW-PWXS refer to neutrons...but: If it is not there, neutron
>> interactions are treated in a "multi-group" approach. This means both
>> a treatment based on neutron energy intervals, and some limitation in
>> the outcome of interactions,. In particular protons, alphas and other
>> charged are not really generated, their energy is simply deposited on
>> the point of production--> no alphas
>> With low-pwxs, you get two things: continuous neutron energy, AND
>> fully correlated generation of all interaction products--> yes alphas
>>
>> Then, I see a problem in your geometry: the second target region
>> (regSiC4) does not exist: it is defined as contained in a 10 micron
>> long cylinder, and downstream
>> of a plane at 2.5 cm from the cylinder entrance. This is a null
>> region, thus you'll get no results from your boundary crossings.
>>
>> In view of the short alpha range, if you want to be sure to see them
>> it would be worthwhile to add a usrtrack or a userbin scoring alphas
>> within the target.
>>
>> You can also look at the fluka output file, at the end there is a
>> summary of particles produced in the run
>>
>> Hope this helps
>> Paola
>> On 3/17/24 23:16, muoio wrote:
>>>
>>> Thanks very much for the quick response,I looked the manual
>>>
>>> http://www.fluka.org/content/manuals/online/LOW-PWXS.html
>>>
>>> but for alpha particles do you have some example?
>>> thanks a lot
>>> A. Muoio
>>>
>>> Il 2024-03-17 19:02 Paola Sala ha scritto:
>>>> Hello
>>>> in order to produce and transport charged particles from low energy
>>>> neutron interactions you have to activate the new point-wise
>>>> treatment,
>>>> by adding the LOW-PWXS card.
>>>> Please have a look at its description in the manual, and ask if
>>>> something is not clear
>>>> Regards
>>>> Paola
>>>> On 3/16/24 16:08, muoio wrote:
>>>>>
>>>>> good morning experts, I tried to insert the analysis request for
>>>>> alpha particles into my simulation, but I get a result that I don't
>>>>> expect... practically zero.
>>>>> The situation is
>>>>>
>>>>> Energy Neutron = 14.1 MeV Number of primary= 10^8 x 5 run
>>>>> Fluence = 4.45 10^11 (n/cm2) Profile Beam=Flat
>>>>> Surface = (5 x 5) mm
>>>>> Spessore 100 um
>>>>>
>>>>> I expect alpha particles from secondary reactions induced by the
>>>>> interaction of neutrons with SiC.
>>>>> I attach the *.inp file that I tried to run
>>>>>
>>>>> thanks a lot
>>>>> Annamaria Muoio
>>>>>
>>>>>
>>>>>
>>>
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Received on Tue Mar 19 2024 - 14:56:39 CET