PLASMA CONDITIONS FOR OPTIMUM GAIN IN RESONANT PHOTOEXCITATION OF STRONTIUM NEON-LIKE IONS BY ALUMINIUM RADIATION J.C. GAUTHIER, J.P. GEINDRE, P. MONIER and C. CHENAIS-POPOVICS J. Phys. Colloques, 47 C6 (1986) C6-259-C6-265 DOI: 10.1051/jphyscol:1986633