X-Ray Emission Spectra of Ni-Like Gold Ions under Coronal Plasma Condition

The strong x-ray line emission of n=4→n=3 and n=5→n=3 transitions of Ni-like Au has been investigated under a coronal plasma condition. A complete set of atomic data, including energy level, transition probability and collision strength, has been obtained to simulate the emission spectra. Under a typical coronal equilibrium (electron temperature of 2500eV and density of 1.0×10¹⁵), the predicted strongest line is due to the transition of (3d_3/2^-14f_5/2)₁ → (3d¹⁰)₀. Extensive studies show that the relative intensity is insensitive to temperature and density over a wide plasma condition.