fix unit conversion in openmc.deplete.Results.get_mass (#2761)

Co-authored-by: Nicolas Linden <n.linden@naarea.fr>
openmc-dev · Nov 9, 2023 · 910d1df · 910d1df
1 parent 7c14603
commit 910d1df
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Showing 2 changed files with 2 additions and 2 deletions.
diff --git a/openmc/deplete/results.py b/openmc/deplete/results.py
@@ -318,7 +318,7 @@ def get_mass(self,
             # Divide by volume to get density
             mass /= self[0].volume[mat_id]
         elif mass_units == "kg":
-            mass *= 1e3
+            mass /= 1e3
 
         return times, mass
 

diff --git a/tests/unit_tests/test_deplete_resultslist.py b/tests/unit_tests/test_deplete_resultslist.py
@@ -111,7 +111,7 @@ def test_get_mass(res):
     assert n_cm3 == pytest.approx(n_ref / volume)
 
     t_min, n_bcm = res.get_mass("1", "Xe135", mass_units="kg", time_units="min")
-    assert n_bcm == pytest.approx(n_ref * 1e3)
+    assert n_bcm == pytest.approx(n_ref / 1e3)
     assert t_min == pytest.approx(t_ref / 60)
 
     t_hour, _n = res.get_mass("1", "Xe135", time_units="h")