Dear Agnieszka,,
just one doubt, seeing that you are interested in Argon. Do you need to
calculate the "signal" in a ionization chamber?
In this case, FLUKA alone cannot give you the answer. The number of
electron-ion pairs created by ionizing particles depends on details of the
molecular structure / gas composition etc etc that go beyond the physics
capabilities of standard transport codes. What we customarily do is to
rely on experimental measurements of the "W" factor, that is the average
energy deposition needed to create an electron-ion pair. The produced
charge (signal) is then given by an energy deposition scoring divided by
W.
The NET-CHRG estimator will give a null result in a bulk material, since
all the charge produced will also be stopped inside.
Hope this helps
Paola
> Hi Agnieszka,
>
> USRTRACK is not what you want at least for scoring ELECTRONS charge
> give a look on the NET-CHRG estimator
> http://www.fluka.org/web_archive/earchive/new-fluka-discuss/4116.html
>
> Cheers
> Vasilis
>
>
> ________________________________
> From: Agnieszka Witkowska [witkowskaagnieszka07_at_gmail.com]
> Sent: Friday, September 08, 2017 22:02
> To: Vasilis Vlachoudis
> Cc: fluka-discuss_at_fluka.org
> Subject: Re: [fluka-discuss]: USRTRACK result -> change of fluence into
> electron charge generated
>
> Dear Vasilis,
>
> I want to calculate total number of electrons generated(charge) in sphere
> filled with argon(my target) by photon beam. Previously I was advised to
> use USRTRACK card to obtain the results of the simulation. I don't know
> how to match particle fluence with total number of electrons generated in
> argon by photon beam.
>
> Agnieszka
>
> 2017-09-08 20:41 GMT+02:00 Vasilis Vlachoudis
> <Vasilis.Vlachoudis_at_cern.ch<mailto:Vasilis.Vlachoudis_at_cern.ch>>:
> Dear Agnieszka,
>
> USRTRACK is used to estimate the particle fluence inside a volume.
> But I believe you need something else, could you explain better what you
> really want.
>
> Vasilis
>
>
> ________________________________
> From:
> owner-fluka-discuss_at_mi.infn.it<mailto:owner-fluka-discuss_at_mi.infn.it>
> [owner-fluka-discuss_at_mi.infn.it<mailto:owner-fluka-discuss_at_mi.infn.it>] on
> behalf of Agnieszka Witkowska
> [witkowskaagnieszka07_at_gmail.com<mailto:witkowskaagnieszka07_at_gmail.com>]
> Sent: Friday, September 08, 2017 15:33
> To: fluka-discuss_at_fluka.org<mailto:fluka-discuss_at_fluka.org>
> Subject: [fluka-discuss]: USRTRACK result -> change of fluence into
> electron charge generated
>
> Dear Fluka users,
>
> I would like to calculate total number of electrons generated in defined
> volume by card USRTRACK. I got completely lost how to get this data from
> the estimated fluence. I will appreciate any help!
>
> Agnieszka
>
>
Paola Sala
INFN Milano
tel. Milano +39-0250317374
tel. CERN +41-227679148
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Received on Tue Sep 12 2017 - 11:55:53 CEST