Re: Re: [fluka-discuss]: the activity of residual simulated is not satisfied with the actual activity

From: Paola Sala <paola.sala_at_mi.infn.it>
Date: Mon, 3 Nov 2014 09:53:24 +0100

Dear Jianqui,
I'm sorry, but if you do not give some more detail I cannot help.
 As already said, I see no problem in your input file.
Do you compare with other calculations or with data? With the same
geometry or not? <with the same mixture of Tungsten and air? What is the
order of magnitude of the difference?
What is "a certain ratio" ? what do you expect and what do you get? Please
make me understand..
Paola


> Dear Paola
> I compared my resluts with others and found that my value was lower
> than the others especially in the medium nuclide. What's more, I had
> a doubt about the same activity acquired by simulation in special
> nuclide after a short term, like 178Ta and 178W , 128Cs and 128Ba,
> 66Cu and 66Ni and so on. I known they are on the decay chain, but I
> didn't understand why they would have the same activity but not a
> certain ratio when they reached transient equilibrium. I wonder if
> you have some good suggestions for me？
> Regards
> Jianqi
>
>
> -----原始邮件-----
> 发件人: "paola sala" <paola.sala_at_cern.ch>
> 发送时间: 2014年10月30日 星期四
> 收件人: "陈建琪" <chenjianqi_at_impcas.ac.cn>, fluka-discuss_at_fluka.org
> 抄送:
> 主题: Re: [fluka-discuss]: the activity of residual simulated is not
> satisfied with the actual activity
>
> Dear Jianqui
> could you, please, explain in more detail what is
> "the consequence acquired by paper" and what is the difference with
> simulation?
> At a first check, I see no problem in your input, except for the fact that
> the geometry is defined with many RCC having some of the surfaces in
> common. This could cause some rounding errors, but should not be a major
> problem. Maybe I'm missing something.
> Regards
> Paola
>
> On 10/30/2014 01:37 PM, 陈建琪 wrote:
>
> Dear fluka experts
> Recently I used fluka to simulate the activity of residual. I found
> that the results was lower than the consequence acquired by paper,
> especially the activity value of medium nuclide. I didn't know what
> parameter I set was wrong. So I attached my input card in
> attatchment to seek help from you! Thank you in advance!
>
> Best regards
> !
> ;
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
> Jianqi
> Chen
>
>
>
>
>
>
>
>
>


Paola Sala
INFN Milano
tel. Milano +39-0250317374
tel. CERN +41-227679148
Received on Mon Nov 03 2014 - 12:40:38 CET