Abstract： Allowed Δn = 0 transitions of highly ionized metal atoms, which may appear in the solar spectra as well as in spectra from the high-temperature tokamak plasmas, lie in the extreme vacuum UV (XUV) region, 100Å≤ λ ≤ 200Å . Here we report our theoretical calculation of the Δn = 0 transitions of C-like cobalt ions; it is in good agreement with the experimental measurement. Such theoretical calculations of the transition wave lengths and their oscillator strengths should be very helpful to identify the XUV spectra.
1990, Vol. 7 
