trk_idf::get_species_energy

Source: idf/trk_idf/trk_idf__get_species_energy.pro

 trk_idf::get_species_energy
        Return the energy range of a given species or of all species.

 Usage:
        energy = trkref -> get_species_energy()

 Keyword:
        species The number or name of the species whose energies are
                needed.
        kev     If set then return values in keV not MeV

 History:
        Original: 4/2/00; SJT
        Added kev key: 24/3/00; SJT