Excitation In Potassium Isoelectronic Sequence

In this present paper, we studied excitation in the potassium isoelectronic sequence. Experimental and theoretical studies of the structure of ionized atoms belong to the most rapidly developing areas of contemporary atomic physics. In the 1970s and 1980s number of experimental developments appeared which now make it possible to produce practically any ionization stage of any chemical element, excite this particular ion and study its energy levels and other atomic properties, usually by applying photon or electon spectroscopy. The experimental progress has matched by similar advantages on the theoretical side. The latter include a deeper understanding of the important physical effects which determine the structure of ionized atoms. In the monograph, the theory of atomic structure and spectra, Cowan1 has summarized the progress made in analysis of atomic spectra. lonized atoms have attracted special interest in modern atomic physics and other related fields such as astrophysics and plasma physics. Lines2 emitted from ionized atoms such as the first transition elements immersed in solar, stellar, and laboratory plasmas have been playing a very important role in modelling these matters. The development of experimental techniques such as electron-beam ion sources or ion accelerators have made it possible to study the spectroscopic properties and scattering cross sesctions of various ion-collision processes with high accuracy3. In the analysis of the spectra observed in these experiments, accurate level structures and optical oscillator strengths for an atom in various charge states are required.