diff --git a/sammy/src/endf/ResonanceParameterIO.cpp b/sammy/src/endf/ResonanceParameterIO.cpp
index 9a823aee875b12b46df4124d110e8d148818d8cc..6e32459bbf0e0b6384b28a9668a3fdf5c462d11e 100644
--- a/sammy/src/endf/ResonanceParameterIO.cpp
+++ b/sammy/src/endf/ResonanceParameterIO.cpp
@@ -1479,5 +1479,24 @@ namespace sammy{
             }
         }
     }
+
+    std::vector<std::string> ResonanceParameterIO::getParticlePairNames(SammyRMatrixParameters & params){
+        std::vector<std::string> name_list; 
+     
+        for ( int ig = 0; ig < params.getNumSpinGroups(); ig++){
+            SammySpinGroupInfo * spinInfo = params.getSpinGroupInfo(ig);
+            for ( int ic = 0; ic < spinInfo->getNumChannels(); ic++){
+                SammyChannelInfo *channelInfo = spinInfo->getChannelInfo(ic);               
+                SammyParticlePairInfo *pairInfo = params.getParticlePairInfo(channelInfo->getParticlePairIndex());  
+                std::string name;
+                if (pairInfo->getName().empty()) name = "undefined";
+                else name = pairInfo->getName();
+                
+                name_list.push_back(name);             
+            }
+        }
+
+        return name_list;
+    }
     
 }
diff --git a/sammy/src/endf/ResonanceParameterIO.h b/sammy/src/endf/ResonanceParameterIO.h
index 0a5738fd623bd225c20c714c3b59268e2b1cf5d5..525ec24cb7cc5353b82e1985fb2304e3e6102ff5 100644
--- a/sammy/src/endf/ResonanceParameterIO.h
+++ b/sammy/src/endf/ResonanceParameterIO.h
@@ -116,7 +116,9 @@ namespace sammy{
          * @param incidentSpin  if old spin  group format the spin of the incident particle
          * @return   0 if no error occurred, 1 for a warning and -1 for an error
          */
-        int readSpinGroupData(SammyRMatrixParameters & isotopes, SammyRMatrixParameters & params, bool oldFormat, double mass, double incidentSpin);        
+        int readSpinGroupData(SammyRMatrixParameters & isotopes, SammyRMatrixParameters & params, bool oldFormat, double mass, double incidentSpin);  
+        std::vector<std::string> getParticlePairNames(SammyRMatrixParameters & params);
+        void setParticlePairNames(SammyRMatrixParameters & params);
     protected:
         class IsotopeData{
            public:
@@ -128,9 +130,9 @@ namespace sammy{
         
         void setSpecialParticlePairInfo( SammyParticlePairInfo & info, int index, const std::string & type) const;
         
-        void readParameterCard1Line(size_t & lineNum, std::vector<double> & values,std::vector<int> & fitOptions, int & group, double & x) const;   
+        void readParameterCard1Line(size_t & lineNum, std::vector<double> & values,std::vector<int> & fitOptions, int & group, double & x) const;
         
-        void readParameterCard10Line(size_t & lineNum, IsotopeData & isoData, bool large) const;  
+        void readParameterCard10Line(size_t & lineNum, IsotopeData & isoData, bool large) const;
         
          int readNewChannelData(const std::string & line, int channelId, SammyRMatrixParameters & params);
         
@@ -142,7 +144,7 @@ namespace sammy{
          */
         void setParticleNames(SammyParticlePairInfo & info);
         
-        void setParticlePairNames(SammyRMatrixParameters & params);
+        
         
         bool manySpinGroups;