Low Energy Electromagnetic models data files
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    * DATA ARE *NOT* FOR COMMERCIAL USE AND MUST BE USED WITHIN GEANT4  *
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Directory Description
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*** Ion stopping powers ***

The same format for ICRU73 and ICRU90 data.
 
   zZZ_MAT.dat       = mass stopping powers from ICRU 73 tables and revised
                       tables provided by P. Sigmund/Univ. of Southern Denmark
                       (revised tables are: G4_WATER (all considered ions), 
                       G4_WATER_VAPOR (all considered ions), G4NYLON-6-6
                       (F ions), G4_Cu (all considered ions))

                       File name definition:
                         * Elemental targets: zZZ_YY.dat
                                               ZZ = ion atomic number
                                               YY = atomic number of material
                         * Compound materials: zZZ_NAME.dat
                                               ZZ = ion atomic number
                                               YY = material name 

                       File content:
                         Format readable by G4LPhysicsFreeVector, data in
                         ICRU 73 units:
                           1st column: Energy per nucleon in MeV
                           2nd column: Mass stopping power in MeV*cm2/(mg)

