Highly charged ion X-rays from Electron-Cyclotron Resonance Ion Sources
  Radiation from the highly-charged ions contained in the plasma of Electron-Cyclotron Resonance Ion Sources constitutes a very bright source of X-rays. Because the ions have a relatively low kinetic energy ($\approx 1$ eV) transitions can be very narrow, containing only small Doppler broadening. We describe preliminary accurate measurements of two and three-electron ions with Z=16--18. We show how these measurement can test sensitively many-body relativistic calculations or can be used as X-ray standards for precise measurements of X-ray transitions in exotic atoms. 
Paul Indelicato (LKB - Jussieu), S. Boucard (LKB - Jussieu), D.S.   Covita, D. Gotta (IKP), A. Gruber (IMEP), A. Hirtl (IMEP...