DETERMINATION OF ION CHARGE-STATE DISTRIBUTIONS IN KRYPTON AND COBALTELECTRON-CYCLOTRON-RESONANCE PLASMAS BY WAVELENGTH DISPERSIVE-X-RAY SPECTROSCOPY

Wavelength dispersive x-ray measurements on cobalt and krypton ions we re presented to determine the ion charge state distribution (CSD) insi de the electron cyclotron resonance (ECR) plasma of the 14.5 GHz ECR i on source of the TU Dresden. For clearly from the parent diagram, line s separating x-ray satellites a comparison between calculated waveleng th shifts and measured ones allows it to deduce the ion CSD of the ana lyzed ions. In the case of small line shifts (lower ionization states) a comparison with x-ray spectra derived from plasma modeling is done. By approximating the modeled spectra to the measured ones a most prob able ion CSD was derived. (C) 1998 American Institute of Physics.