EUV spectroscopy of optically thin germanium plasmas in the 9-18 nm region

EUV spectra have been recorded from optically-thin germanium laser produced plasmas created using a high-powered TEA CO2 laser. The Cowan suite of atomic codes has been used to identify previously unidentified lines in Ge VI-XI. The absence in the spectra of Delta n=0 transitions for ion stages lower than Ge9+ has been interpreted by calculating line strength ratios for of Delta n=0 to Delta n=1 transitions for the relevant ion stages.