Dear Mikhail,
you are right, I am not getting a correct integral fluence if I use solely the normalization factor found by integrating the differential fluence. However, I found empirically that if I multiply this factor by 4*pi*(Rs/100)^2, where Rs is radius of emission sphere, it works! Even with different radiuses and SPE sources. Clearly this is somehow related to the 1/(pi R^2) cm-2 you mentioned earlier but I can't figure out how.
If you can determine the relationship, it would be very helpful. In any case, thank you for your help,
Roman
________________________________
From: Mikhail Polkovnikov <Михаил Полковников> <pmk_at_ihep.ru>
Sent: Thursday, July 21, 2016 1:00 AM
To: Roman Savinov; fluka-discuss_at_fluka.org
Subject: Re: [fluka-discuss]: normalization with SFLOOR
On 21.07.2016 01:52, Roman Savinov wrote:
Dear Mikhail,
thank you for your response.
I tried SFLOOD after following the Alfredo's suggestion
http://www.fluka.org/web_archive/earchive/new-fluka-discuss/0875.html
What I need is indeed uniform and isotropic source of fluence however not of a fixed value but with energy spectra defined by file. I need this to simulate a particular solar event.
Is SFLOOD a right thing to do it? Can it be used with a spectra file or it always produces fluence of a fixed value?
I attach the source file with differential fluence of the 1956 event to show what I mean. The units are: [ MeV #/cm2/MeV ]
Thank you,
Roman
Dear Roman,
Your source_sfloor.f file was correct. SFLOOD is just an uniform and isotropic fluence (density of the tracks) within the sphere, the energy of each particle is generated according to your spectrum (first column - energy bin (MeV), second column - diff. fluence).
I can't guarantee, that you will get a correct integral fluence for normalization, just by integrating the differential fluence data from given spectrum.
Best regards,
Mikhail
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Received on Fri Jul 22 2016 - 04:08:43 CEST