Dear Fluka experts,
I would like to simulate mammography unit and I stuck on rhodium filter. Previous steps went fine, until I add additional Rh layer. Now run immitadely generates error “Low energy neutron xsec not found for some media RHODIUM”.
Any idea what I did wrong? Is it any problem with material import from base?
Best regards
Magdalena
Dear Magdalena,
Generally for every user defined material (element) in FLUKA a low energy neutron cross section needs to be linked with the LOW-MAT card. If the name of the material matches one of the names in the FLUKA database, it is done automatically, and the LOW-MAT card is not necessary.
Unfortunately Rhodium is a special case in the sense that FLUKA doesn’t have low energy neutron cross section data for it.
Since you are simulating X-rays and you don’t have neutrons, the low energy neutron cross section is irrelevant. I would suggest to use a cross section of another element for rhodium to satisfy FLUKA.
Cheers,
David
Dear David,
Thank You for Your answer. I knew about LOW-MAT card, but I didn’t knew that i can try trick FLUKA like that. I’m gonna try it!
Best regards,
Magdalena