Ionization energies of W~I-LXXIV and critical compilation of spectra and energy levels of Ga I-XXX

Both tungsten and gallium are important materials for fusion energy research. In this work, a semi-empirical method is used to determine ionization energies (IE) of multiply charged W ions [A.E. Kramida, J. Reader, \textit{Ionization Energies of Tungsten Ions: W}$^{2+}$\textit{ through W}$^{71+}$, At. Data Nucl. Data Tables, 2006, in press]. The method is based on Hartree-Fock calculations of electron binding energies with empirical scale factors. Relative uncertainties vary from 1.7~{\%} for W III$^{ }$to 0.015~{\%} for W LXXII. Combined with previously known experimental or theoretical IE values for W I-II and LXXIII-LXXIV, these new semiempirical results allow us to build a complete table of IEs of tungsten in all stages of ionization. For gallium, all available experimental data on wavelengths and energy levels are critically compiled and evaluated [T. Shirai, J. Reader, A.E. Kramida, J. Sugar, \textit{Spectral Data for Gallium: Ga I through Ga XXXI}, J. Phys. Chem. Ref. Data, 2006, in press]. Such data exist for spectra Ga~I-VII, XIII-XXVI, and XXX. For Li-like Ga~XXIX through H-like Ga~XXXI, theoretical data on energy levels and line wavelengths are compiled. For Ga~I-III, XV-XX, XXIII-XXVI, and XXX, radiative transition probabilities are included where available. The ground state configuration and term and a value of IE are included for each ion. This work was supported in part by the Office of Fusion Energy Sciences of the U. S. Department of Energy.