Add the multiplication by density to kappa-fission.

nuclearkevin · nuclearkevin · commit 82e7cf1d9a34 · 2026-01-14T12:49:48.000-06:00
diff --git a/src/random_ray/flat_source_domain.cpp b/src/random_ray/flat_source_domain.cpp
@@ -666,7 +666,8 @@ void FlatSourceDomain::random_ray_tally()
           break;
 
         case SCORE_KAPPA_FISSION:
-          score = flux * volume * kappa_fission_[material * negroups_ + g];
+          score = flux * volume * kappa_fission_[material * negroups_ + g] *
+                  density_mult;
           break;
 
         default:
