Photoionization of Atomic Sc

Photoionization cross sections are calculated for the ground ([Mg]$ 3p^{6}3d4s^{2}$ $^{2}$D$^{e})$ state of atomic Sc for photon energies from threshold to 40.0 eV. The discrete Sc$^{+}$ orbitals are generated using both the AUTOSTRUCTURE and CIV3 codes, and R-matrix is used to carry out the cross section calculations. The results are compared with each other, then with previous calculations and available experimental data for final-ionic states representing the $3d$ and $4s$ main lines and associated satellites (ionization with excitation) in the region of the 3\textit{p $\to $ 3d }giant resonances [1]. Reasonably good agreement between our non-relativistic results and experiment is obtained. This work is supported by US DOE and NSF \\[4pt] [1] S. B. Whitfield, K. Kehoe, R. Wehlitz, M. O. Krause, and C. D. Caldwell $\to $hys. Rev. A \textbf{64}, 022701 (2001).