SPECTROSCOPIC STUDY OF THE IONIZATION DYNAMICS IN A CO2 LASER-PRODUCED PLASMA OF HELIUM J. C. Gauthier, J. P. Geindre et N. GrandjouanJ. Phys. Colloques, 40 C7 (1979) C7-735-C7-736DOI: https://doi.org/10.1051/jphyscol:19797355