Hi,
note that, as in the manual, the effective (average) density of 0.3 g/cm3
is the one to be put in the MATERIAL card, while the true (local) density
of 1.05 g/cm3 has to be considered for the MAT-PROP card, by means of a
factor multiplying the first. (Not viceversa).
In the mentioned example 2 of the MAT-PROP card in the manual, the above
numbers are correctly input, but their name in the card comments is
swapped (local <-> average).
Kind regards
Francesco
**************************************************
Francesco Cerutti
CERN-EN/STI
CH-1211 Geneva 23
Switzerland
tel. +41 22 7678962
On Sun, 3 Feb 2019, Fasso, Alberto wrote:
> Dear Mahmoudreza,
> the code considers the average density to describe particle transport ("how far is the next interaction?"), but it considers
> the local density to describe the interaction itself ("how much dose is deposited?"). If you want both the interaction distance and
> the interaction to be described correctly, you need both MATERIAL and MAT-PROP as shown in the example of the Manual.
>
> Alberto
> ________________________________________
> From: mrakbari2015_at_ast.ui.ac.ir <mrakbari2015_at_ast.ui.ac.ir>
> Sent: Saturday, February 2, 2019 7:17 PM
> To: Fasso, Alberto
> Cc: fluka-discuss_at_fluka.org; Vasilis.Vlachoudis_at_cern.ch
> Subject: Re: [fluka-discuss]: which publication of ICRP has reported the lung density equal to 1.05 g/cm3
>
> Dear Dr. Fasso
> Thanks indeed for your instant reply. if we enter lung(ICRP) with the density of 1.05 g/cm3 from flair material data library to the input file and do not define MAT-PROP, does the code consider the 0.3 g/cm3 average density for the lung automatically? I mean for defining the lung with 0.3 g/cm3 average density, is it necessary to define MAT-PROP card in the input file?
> Best Wishes,
>
>
> Quoting "Fasso, Alberto" <fasso_at_slac.stanford.edu<mailto:fasso_at_slac.stanford.edu>>:
>
> Dear Mahmoudreza,
> lung has a local density larger than its average density, due to its alveolar structure.
> Look at the FLUKA manual, option MAT-PROP. Example 2 shows how to define a local density of Lung (1.05 g/cm3) with command
> MATERIAL, as well as an average density (0.3 g/cm3) by means of option MAT-PROP.
>
> Alberto
> ________________________________________
> 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 mrakbari2015_at_ast.ui.ac.ir<mailto:mrakbari2015_at_ast.ui.ac.ir> <mrakbari2015_at_ast.ui.ac.ir<mailto:mrakbari2015_at_ast.ui.ac.ir>>
> Sent: Friday, February 1, 2019 8:56 PM
> To: fluka-discuss_at_fluka.org<mailto:fluka-discuss_at_fluka.org>; Vasilis.Vlachoudis_at_cern.ch<mailto:Vasilis.Vlachoudis_at_cern.ch>
> Subject: [fluka-discuss]: which publication of ICRP has reported the lung density equal to 1.05 g/cm3
>
> Dear FLUKA experts
> During the lung tissue simulation, I encountered to 1.05 g/cm3 for lung tissue densiy in the flair material data library?
> In which publication of the ICRP this value was reported? isn't it too high for lung? 0.26 g/cm3 would be a proper choise?
> however, lung tumor (GTV/ITV)might have the same density as 1.05 g/cm3.
> Best wishes,
>
> Mahmoudreza Akbari
>
> Ph.D. Candidate in Medical Radiation Engineering
> Department of Nuclear Engineering,
> Faculty of Advanced Sciences and Technologies,
> University of Isfahan, Isfahan, Iran.
> Alternative Email: mrakbari2012_at_gmail.com<mailto:mrakbari2012_at_gmail.com>
> Tel: 0098-09304403165
>
>
> __________________________________________________________________________You can manage unsubscription from this mailing list at https://www.fluka.org/fluka.php?id=acc_info
>
>
>
> __________________________________________________________________________
> You can manage unsubscription from this mailing list at https://www.fluka.org/fluka.php?id=acc_info
>
>
__________________________________________________________________________
You can manage unsubscription from this mailing list at
https://www.fluka.org/fluka.php?id=acc_info
Received on Sun Feb 03 2019 - 13:50:19 CET