Dear Valentin,
I understand that the relevant reaction is rather 18O(p,n)18F. This
evidently does not impy low energy neutron cross sections. Still, the
latter ones are needed in order to further transport neutrons inside your
H2O-18 target. For this purpose, your use of 16O cross sections (as you
correctly guessed) is a working trick, whose impact depends on what you
are looking at.
You can remove the O-18 atomic weight (17.99916), since FLUKA knows it.
Cheers
Francesco
**************************************************
Francesco Cerutti
CERN-EN/STI
CH-1211 Geneva 23
Switzerland
tel. ++41 22 7678962
fax ++41 22 7668854
On Fri, 5 May 2017, Valentin Bonvin wrote:
> Hello (sorry for my English),
>
> I would like to do a simulation of a cyclotron and firstly need to create 18-O to simulate the
> following reaction 18O(n,p)18F, but I don't find cross section of 18-O on the FLUKA
> manuel(10.4).
> So I did that:
>
>
> * Création H2O-18
> MATERIAL 8. 17.999161 .00142769 18.O-18
> LOW-MAT O-18 8. 16. 296. OXYGEN
> MATERIAL 1. H2O-18
> COMPOUND 2.0 HYDROGEN 1.0 O-18 H2O-18
> ASSIGNMA H2O-18 TARGET
>
> But here I think I use 16-O cross section. Is there a better way to do this or not ?
>
> Thanks a lot,
>
> Valentin BONVIN
>
>
__________________________________________________________________________
You can manage unsubscription from this mailing list at
https://www.fluka.org/fluka.php?id=acc_info
Received on Fri May 05 2017 - 16:00:46 CEST