-- SOUGATA RAKSHIT / सौगत रक्षित Scientific Officer(D) / वैज्ञानिक आधिकारीक(D) RSSD / आर एस एस डि Bhabha Atomic Research Centre / भाभा परमानु अनुसंधान केंद्र Mumbai-400 085 / मुंबई-400 085 Tel: +91-022-2559 2214/ दूरभाष: +91-022-2559 2214 On 2019-09-20 23:50, Maria Ilaria Besana wrote: > Dear Sougata, > > there is not a general receipt to set the EMFIX and STEPSIZE values. > It depends on your specific problem. > I have however some general suggestions. > I would recommend to use as low thresholds as possible for electrons > and photons. > In addition to this you can consider to activate single scattering, > using the MULSOPT card. > Replacing multiple scattering with single scattering can be very > demanding in terms of CPU, but it can work for your case, since you > are interested in a very thin layer and low energy particles. > Please have a look at the MULSOPT card in the manual, especially at > Note 6. > > Hope that helps, > best regards, > Ilaria > >> On 18 Sep 2019, at 07:39, Sougata <sougata_at_barc.gov.in> wrote: >> >> Dear Fluka users, >> >> I am trying to evaluate dose from electron beam in tissue. Energy of >> electron is 100 keV to 2 MeV for different cases. For this I am >> taking thin slab of thickness 0.004 cm (TISSUEIC material) which is >> surrounding by similar material. I have set transport/production >> cutoff at lowest available. I am scoring energy deposition. Fluka >> default is set at PRECESSION. My queries are as following >> >> 1. Is there any requirement to apply EFMIX and/or STEPSIZE for this >> case as I am scoring energy deposition in thin slab? If yes how to >> optimize. Because I observed variation of ~20% by applying maximum >> STEPSIZE of 0.0001 cm for the present input (FILE ATTACHED). Please >> elaborate. >> >> 2. What other precaution should I take for dosimetry at low energy >> electron for example around 100 keV ? >> >> -- >> SOUGATA RAKSHIT / सौगत रक्षित >> Scientific Officer(D) / वैज्ञानिक आधिकारीक(D) >> RSSD / आर एस एस डि >> Bhabha Atomic Research Centre / भाभा परमानु अनुसंधान केंद्र >> Mumbai-400 085 / मुंबई-400 085 >> Tel: +91-022-2559 2214/ दूरभाष: +91-022-2559 >> 2214<betaVOL-500keV-TSUEIC-p004cm_aa.inp> > > > __________________________________________________________________________ > You can manage unsubscription from this mailing list at > https://www.fluka.org/fluka.php?id=acc_info
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