Read the manual!
Note 1) to option COMPOUND:
1) Option COMPOUND must always be used in conjunction with a MATERIAL
card having the same SDUM name (see MATERIAL). MATERIAL cards used
for this purpose provide the density of the compound, its
material number and name (WHAT(1) and WHAT(2) of the MATERIAL option,
namely atomic number and weight, are ignored).
Unless the elements specified by MATERIAL are used also separately as
single elements, their density is irrelevant.
Read the manual!
Alberto
>
> Dear Experts,
>
>
> I’m a novice of Fluka. Recently, I wish to transport neutrons (a part
> of them with energy less than 20 MeV) generated by proton, and there is a
> material of ordinary polyethylene (CH2) as shielding in the model.
> Firstly, I define individual element (C & H) with low-mat card, as shown
> in figure below. And now I have a little confusion about the density
> of individual element, which is used to define compound (or alloy,
> mixture), in the material card. Is it mass density of natural free element
> (such as the density in Elements Table in Fluka) or weight of
> corresponding element in the compound/alloy/mixture per volume or
> something else?
>
>
>
>
> [IMAGE]
>
>
> Thanks.
>
>
> Best regards,
>
>
>
> __________________________________________________________________________
>
> 致
>
> 礼
>
>
>
> 刘盼 Pan LIU
>
>
>
> 发展先进核能科技 让人类生活更美好!
>
> 中国科学院核能安全技术研究所·FDS团队
>
> 中国科学院中子输运理论与辐射安全重点实验室
>
> Institute of Nuclear Energy Safety Technology, CAS·FDS Team
>
> Key Laboratory of Neutronics and Radiation Safety, CAS
>
> 地址：安徽省合肥市蜀山湖路350号1135号信箱
>
> 电话/传真：0551-65593076/0551-65593681
>
> P.O Box 1135, No.350, Shushanhu Road, Hefei, Anhui, 230031, China
>
> Tel/Fax: +86 551 65593076/+86 551 65593681
>
> [IMAGE]
>
> www.fds.org.cn
>
>
>
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Received on Wed Jan 07 2015 - 12:36:21 CET