Hi everyone,
I was simulating a homogeneous SFR model, trying to export a 10-group (equal-lethargy structure from 0.418eV-14.7MeV) scattering XS matrix.
Considering the isotropic scattering of fast reactor, I set the Legendre_order to 3, then I got a csv file with a form like
material | group in | group out | legendre | nuclide | mean
3 1 1 P0 total 0.121986159
3 1 1 P1 total 0.063974833
3 1 1 P2 total 0.047618702
3 1 1 P3 total 0.032470687
Is the XS data each line here means “each legendre component” or "corresponding XS data with Pn approximation” ？
Best regards!
Weixiang Wang