TOTAL CROSS SECTIONS FOR POSITRON SCATTERING ON NITROGEN AT
INTERMEDIATE ENERGIES
	Grzegorz P. Karwasz, Mario Barozzi, Roberto S. Brusa, and Antonio Zecca
        Istituto Nazionale per la Fisica della Materia 
Dipartimento di Fisica, Universita' di Trento, 38050 Povo (TN), Italy
        Preliminary total cross section measurements for positron scattering
on molecular nitrogen have been performed between 500 eV and 2500 eV. A
Ramsauer-type apparatus, previously used for electron scattering
measurements has been modified. Electron and positron cross sections above
2000 eV concide within the experimental error bar.