1999 Articles

Laboratory Measurements of Resonant Contributions to Fe XXIV Line Emission

Gu, M. F.; Beiersdorfer, P.; Brown, G. V.; Kahn, S. M.; Liedahl, D. A.; Reed, K. J.; Savin, Daniel Wolf

Using an electron beam ion trap, we have measured the relative cross sections for Fe XXIV line emission at electron energies between 0.7 and 3.0 keV. Good agreements with distorted wave and R-matrix calculations are found at energies above 1.5 keV. At lower energies, the contributions of resonant excitation are observed and agree with R-matrix calculations. Below the excitation thresholds, the intensities of dielectronic recombination satellites for capture into n ! 5 levels are measured.