Die Erniedrigung der Ionisationsenergie des C II-Ions in einem Hochdruckplasma

Abstract

Abstract The lowering of the ionization potential of singly ionized carbon has been determined from measurements of the high - pressure plasma produced by capillary - discharges in plexiglass. Line intensities of C III 2297 Å and C II 2509/2511 Å as well as the electron density from the profile of Ha were obtained side-on by the use of a rapid-scan method while the temperature of the plasma was derived from simultaneous multi-channel-measurements of the optically thick end-on radiation of the plasma column. Rather good agreement is found with the results of the theoretical approaches based on polarization-effects in plasmas.