8th HEAD Meeting, 8-11 September, 2004
Session 6 Laboratory Astrophysics
Poster, Wednesday, September 8, 2004, 9:00am-10:00pm

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[6.05] Relativistic Configuration and Many-body purterbation Calculations of 3\to 2 Transition Wavelengths of L-shell ions

M. F. Gu (Department of Physics, Stanford University)

A combined relativistic configuration interaction and second order many-body purterbation theory is applied to calculate the wavelengths of 3\to 2 transitions of L-shell Fe and Ni ions. A comparison of calculated n=2 level energies with experimental results indicates that these levels are accurate to within ~pm 0.1 eV. The calculated 3\to2 transition wavelengths of L-shell Fe ions are compared with the expiremental measurements from Lawrence Livermore electron beam ion traps. It is found that the second order many-body purterbation corrections improve the wavelengths significantly over the standard relativistic configuration interaction calculations. A complete table of 3\to 2 line list is presented for L-shell ions of Fe and Ni, with estimated wavelength uncertainties of < 10 m{Å}. Such a table is expected to be useful in X-ray spectral analysis of a wide variety of astrophysical sources.

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