Bug correction when plotting arrows for non existing nuclei

src/root/gui/cubix/src/CXLevelSchemePlayer.cpp

@@ -89,6 +89,8 @@ void CXLevelSchemePlayer::CleanArrows()
 {
     gPad = fMainWindow->GetSelectedPad();
 
+    if(gPad == nullptr) return;
+
     for(int i=0 ; i<fListOfArrows->GetEntries() ; i++) {
         if(gPad->GetListOfPrimitives()->FindObject(fListOfArrows->At(i))) {
             gPad->GetListOfPrimitives()->Remove(fListOfArrows->At(i));
@@ -205,6 +207,7 @@ LevelScheme *CXLevelSchemePlayer::DrawArrowsForNuc(TString NucName, TString Data
     LevelScheme *RefLevel = nullptr;
 
     CXNucleus nuc(NucName);
+    if(nuc.IsKnown() == false) return nullptr;
 
     ///ENSDF data
     if(fGuiLSPlayer->GetDataType()==1 || fGuiLSPlayer->GetDataType()==3) {

src/root/gui/cubix/src/CXRadReader.cpp

@@ -593,7 +593,7 @@ double CXRadReader::EffFuncFormula(double *x, double *p)
     double EG = x[0];
     double eff=0;
 
-    // Paramters from Radware's web site:
+    // Paramters from Radware's web site: https://radware.phy.ornl.gov/gf3/#5.3.
     // A=7.04 B=0.7 C=0.
     // D=5.273 E=-0.863 F=0.01
     // G=11