RE: How to define a mixture of different isotopes?

From: Vasilis Vlachoudis <Vasilis.Vlachoudis_at_cern.ch>
Date: Sat, 10 Aug 2013 15:59:10 +0000

Hi, the two questions are strongly related. If you use the recommended name you don't need to use a LOW-MAT card.
For any other material name you have to tell the code which neutron cross section to use and this is done with the LOW-MAT

Cheers
Vasilis

________________________________________
From: owner-fluka-discuss_at_mi.infn.it [owner-fluka-discuss_at_mi.infn.it] on behalf of yyc2011_at_mail.ustc.edu.cn [yyc2011_at_mail.ustc.edu.cn]
Sent: 09 August 2013 12:56
To: fluka-discuss
Subject: Re: How to define a mixture of different isotopes?

Dear Vasilis,

Thanks for your reply.I have two questions to ask you.

First,you strongly suggest me to give the materials the same name as the neutron cross section libraries found in the manual Chapter
10.4.1.2, DEUTERIU and TRITIUM.Can you tell me the reason?

Second,In the input file you give me,Is it necessary to use low-mat option?

Yours,
Chenyuan


> -----Original E-mail-----
> From: "Vasilis Vlachoudis" <Vasilis.Vlachoudis_at_cern.ch>
> Sent Time: 2013-8-9 18:10:41
> To: "yyc2011_at_mail.ustc.edu.cn" <yyc2011_at_mail.ustc.edu.cn>, fluka-discuss <fluka-discuss_at_fluka.org>
> Cc:
> Subject: RE: How to define a mixture of different isotopes?
>
> Dear Chenyuan
>
> To define the mixture you want, you have to:
>
> 1. create the MATERIAL cards, of Deuteron and Triton. You need to provide the
> - Z what(1)
> - Density:what(3) (even if you don't assign this material to any region)
> - A:what(6), name:sdum
> Strongly recommended give them the same name as the neutron cross section libraries found
> in the manual Chapter 10.4.1.2, DEUTERIU and TRITIUM.
>
> 2. create MATERIAL card for the compound. You need to give
> - Density: what(3)
> - Name: sdum - anything you like and is accepted by FLUKA. Not empty
>
> 3. create one or many COMPOUND cards as you did with the same NAME as the MATERIAL before #2
>
> Cheers
> Vasilis
>
>
> ________________________________________
> From: owner-fluka-discuss_at_mi.infn.it [owner-fluka-discuss_at_mi.infn.it] on behalf of yyc2011_at_mail.ustc.edu.cn [yyc2011_at_mail.ustc.edu.cn]
> Sent: 09 August 2013 05:05
> To: fluka-discuss
> Subject: How to define a mixture of different isotopes?
>
> Good morning,
>
> Now,I have a problem to define a mixture of different isotopes.Please look at my input file bjuc.txt.In the Fluka,I want to define
> Deuteron and Triton mixture.If I assume,the atomic ratio of Deuteron is 58%,and the atomic ratio of Triton is 42%.After running,.err
> file shows "Nonsense compound,fraction 0.58 of medium 26 for compound".Meanwhile,I don't know how to define the name of DT
> mixture.So,in the input file,I leave it blank.In a word,How to define DT mixture?
>
> Best regards,
> Chenyuan
>
>
>
>
>
Received on Sun Aug 11 2013 - 12:07:43 CEST