diff --git a/examples/makefile b/examples/makefile
index e84edab..9effe4b 100644
--- a/examples/makefile
+++ b/examples/makefile
@@ -1,8 +1,8 @@
-PROGRAMS=simple dedx example2 materials ls_coefficients
+PROGRAMS=simple dedx example2 materials ls_coefficients reactions
 
 GCC=g++ -Wall -std=c++14
 INCDIR=-I$(CATIMAPATH)/include
-LIBDIR=-L$(CATIMAPATH)
+LIBDIR=-L$(CATIMAPATH)/lib
 LIBS=-lcatima
 
 
diff --git a/examples/reactions.cpp b/examples/reactions.cpp
new file mode 100644
index 0000000..b6b3e74
--- /dev/null
+++ b/examples/reactions.cpp
@@ -0,0 +1,27 @@
+#include "catima/catima.h"
+#include "catima/reactions.h"
+#include <iostream>
+
+using std::cout;
+using std::endl;
+
+
+int main(){
+    catima::Material target = catima::get_material(4);
+    target.thickness(1.0);      // thickness in g/cm2
+    catima::Projectile p(12,6); // define projectile, ie 12C
+    
+    double cs = 45;
+    double rcsi = 870;
+    double rcso = 860;
+    
+    cout<<"C->Be\n";
+    cout<<"t(g/cm2)\t rate"<<endl;
+    for(double t=0.25; t<=5;t+=0.25){
+        target.thickness(t);
+        double r = production_rate(45,rcsi, rcso, target);
+        cout<<t<<"\t"<<r<<endl;
+    }
+    
+    return 0;
+}