Laser-Produced Spectra and QED Effects for Fe-, Co-, Cu-, and Zn-like Ions of Au, Pb, Bi, Th, and U

J. F. Seely; J. O. Ekberg; C. M. Brown; U. Feldman; W. E. Behring; Joseph Reader; M. C. Richardson

doi:10.1103/PhysRevLett.57.2924

Laser-Produced Spectra and QED Effects for Fe-, Co-, Cu-, and Zn-like Ions of Au, Pb, Bi, Th, and U

J. F. Seely, J. O. Ekberg, C. M. Brown, U. Feldman, W. E. Behring, Joseph Reader, and M. C. Richardson

Phys. Rev. Lett. 57, 2924 – Published 8 December 1986

Abstract

Spectra of very highly charged ions of Au, Pb, Bi, Th, and U have been observed in laser-produced plasmas generated by the OMEGA laser. Line identifications in the region 9-110 Å were made for ions in the Fe, Co, Cu, and Zn isoelectronic sequences. Comparison of the measured wavelengths of the Cu-like ions with values calculated with and without QED corrections shows that the inclusion of QED corrections greatly improves the accuracy of the calculated $4 s - 4 p$ wavelengths. However, significant differences between the observed and calculated values remain.