diff --git a/doc/materials/groups/MATGROUP_RADIOACTIVE b/doc/materials/groups/MATGROUP_RADIOACTIVE
new file mode 100644
index 0000000..1f2be19
--- /dev/null
+++ b/doc/materials/groups/MATGROUP_RADIOACTIVE
@@ -0,0 +1,5 @@
+Gruppenid:
+MATGROUP_RADIOACTIVE
+
+Name:
+Unbeschreibliches