How does one define a material composed of isotopes of an element? I have read the documentation and also looked through the forum and this training lecture:
but it’s still ambiguous as there’s no explicit example of a material with isotopes.
If we take an element that’s not one of the 23 built in ones, Molybdenum for example with 5 stable isotopes over 1% abundance. Can you just only specify the Z and the abundances are already included in FLUKA? (if so, is it documented which istopes and abundances are implemented in the code?). Or how do we specify them completely?
MATERIAL , 42 , , 10.28 , , 94 , MO94 MATERIAL , 42 , , 10.28 , , 95 , MO95 MATERIAL , 42 , , 10.28 , , 96 , MO96 MATERIAL , 42 , , 10.28 , , 97 , MO97 MATERIAL , 42 , , 10.28 , , 98 , MO98 MATERIAL , , , 10.28 , , MOLY COMPOUND , -0.0919 , MO94 , -0.159 , MO95 , -0.167 , MO96 , MOLY COMPOUND , -0.0958 , MO97 , -0.243 , MO98 , , , MOLY
MATERIAL, 42, , 10.28 , , , MOLY
and this already has the isotopes internally defined despite not being a built-in material?
And you have to specify the density each time for every material card?
WHAT(1) says " Atomic number (meaningful only when not coupled to a COMPOUND card; otherwise set to 0.)," so I should not be specifying this as I’m using a COMPOUND card?
I want to both use built-in defaults if they exist and are listed what they are but also be able to implement explicit material definitions to ensure they are the same as NIST ones.
I found an example about Uranium in the forum but the comments say the solution is wrong and won’t behave as expected but don’t give a written out example.
Any help would be really appreciated,