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what is 40000.03c in 2D pin input in tutorial?

Posted: Sun May 30, 2021 2:04 am
by yunlin
mat clad -6.55
40000.03c -1.0

Is it possible to specify mixture with one xs identifier?

Re: what is 40000.03c in 2D pin input in tutorial?

Posted: Sun May 30, 2021 11:01 pm
by Ana Jambrina
40000.03 corresponds with natural zirconium at 300K.
If the cross-section library includes natural elements, such in this case “Zr-nat”, you would be able to represent natural zirconium with a single identifier. Nonetheless, compositions based on natural elements, non isotopically decomposed, might have some limitations, e.g., in depletion calculations.

The command line option ‘-elem’ decomposes natural elements (identified by symbol SYM at density DENS, into its constituent isotopes.