[gate-users] LYSO definition in materials.db

[Christian MOREL]

Dear Stefaan,

The density of the LYSO complex Lu2(x)Y2(1-x)SiO5 (x in the range 0 to 
1) depends of the fraction of Lu (x) and Y (1-x). It depends more or 
less linearly on (x) between the density of YSO (with 0% Lu and 100% Y: 
4.45 gr/cc) and that of LSO (with 100% Lu and 0% Y: 7.4 gr/cc). So when 
you speak about LYSO, you should always precise the fraction of Lu (x) 
or of Y (1-x).

Best regards,

Christian Morel


Le samedi, 4 sep 2004, à 00:05 Europe/Zurich, 
stefaan.vandenberghe at philips.com a écrit :

>
> Hello,
>
> After default installation of GATE, LYSO is defined in materials.db 
>  with a density of 5.37 g/cm3.
>
> I think this is not correct, it should be in the range of 7.1-7.3 
> g/cm3  (in the same file LSO has a density of 7.4 g/cm3).
>
>  
> Stefaan Vandenberghe
>
> Clinical Site (UPENN, Philadelphia) Research
> Philips Research USA                                  
>
> email: Stefaan.Vandenberghe at Philips.com
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>

__________________
Christian MOREL, PD, PhD
LPHE-IPEP
EPFL
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