Analysis of fine structure of X-ray spectra from laser-irradiated gold dot

The X-ray emission spectra from highly stripped plasma of gold has been obs erved by focusing a Nd-glass frequency-tripled laser beam onto the surface of the gold dot at the XINGGUANG II laser facilities. The spectra of gold i ons in the range of 0.0003 nm-0.0004 nm was recorded using the plate PET (2 d = 0.8742 nm) crystal spectrometer. The code of average energy of relativi stic subarrays was built on the basis of the code MCDF ( Multi-Configuratio n-Dirac-Fock). Using the spin-orbit-split-arrays (SOSA) formalism, mean wav elengths and full widths at half height of isolated peaks of subarrays of l ower charged gold ions, isoelectronic with Cu,Zn,Ga and Ge, was calculated. Twenty-six lines are interpreted, they pertain mainly to transitions of 3d -nf (n = 5,6, 7) of gold ions from Ni-like to As-like. These results of exp eriment and calculation have important application in plasma diagnostics an d examination of high Z elemental atomic structure calculation.