Removed spurious r_ij in force for Morse potential in manual.

The code was correct though.

Change-Id: Ia3459569de08b3bf1eb79206ff13092a555c27cb

diff --git a/docs/manual/forcefield.tex b/docs/manual/forcefield.tex
index 7f8f922d83c5f36ff0869828545a704f694256ec..c754382c77b980f7b04224190c7e0f1c6734f0c9 100644 (file)
--- a/docs/manual/forcefield.tex
+++ b/docs/manual/forcefield.tex
@@ -444,7 +444,7 @@ distance. The functional form is:
 See also \figref{morse}, and the corresponding force is:
 \beq
 \begin{array}{rcl}
-\displaystyle {\bf F}_{morse} ({\bf r}_{ij})&=&2 D_{ij} \beta_{ij} r_{ij} \exp(-\beta_{ij}(r_{ij}-b_{ij})) * \\
+\displaystyle {\bf F}_{morse} ({\bf r}_{ij})&=&2 D_{ij} \beta_{ij} \exp(-\beta_{ij}(r_{ij}-b_{ij})) * \\
 \displaystyle \: & \: &[1 - \exp(-\beta_{ij}(r_{ij}-b_{ij}))] \frac{\displaystyle {\bf r}_{ij}}{\displaystyle r_{ij}},
 \end{array}
 \eeq