Update docs/User Manual.rst

Co-authored-by: valeriaRaffuzzi <108435337+valeriaRaffuzzi@users.noreply.github.com>
CambridgeNuclear · Nov 21, 2023 · 93169c3 · 93169c3
1 parent 98b99a9
commit 93169c3
Showing 1 changed file with 4 additions and 3 deletions.
diff --git a/docs/User Manual.rst b/docs/User Manual.rst
@@ -203,9 +203,10 @@ Hence, an input would look like: ::
 fissionSource
 #############
 
-A source intended to be used in eigenvalue calculations. It is a type of volumetric source, which
-uniformly distributes fission sites in the geometry. The energy spectrum of the fission neutrons
-is based on a fixed incident energy provided by the user. The properties of a fission source are:
+A source intended to initialise eigenvalue calculations. If it is not defined in the input file, it is
+used with the default settings. It is a type of volumetric source, which uniformly distributes fission
+sites in the geometry. The energy spectrum of the fission neutrons is based on a fixed incident
+energy provided by the user. The properties of a fission source are:
 
 * data (*optional*, default='ce'): data type for source particles. Can be ``ce``
   or ``mg``.