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High-resolution measurements have been made of Ti $K\ensuremath{\alpha}$ x rays and satellites ($K{L}^{n},n=0\ensuremath{-}4$) following bombardment of thick Ti targets by ${\mathrm{H}}^{+}$, ${\mathrm{He}}^{n+}$, ${\mathrm{Li}}^{n+}$, ${\mathrm{C}}^{n+}$, and ${\mathrm{O}}^{n+}$ ions at energies of 1-5 MeV/amu. A systematic study was made of the effect of projectile atomic number ${Z}_{1}$ and energy ${E}_{1}$ upon the relative intensities, centroid energies, and widths of the various x-ray peaks. The intensity of the satellite structure relative to the diagram lines ($K{\ensuremath{\alpha}}_{1},{\ensuremath{\alpha}}_{2}$) increases with increasing ${Z}_{1}$ for the same-velocity projectile up to ${Z}_{1}=8$. Both the ${Z}_{1}$ and ${E}_{1}$ dependence of these intensities agree reasonably well with a theoretical model described elsewhere. Deviations of peak intensities from theory are discussed. Centroid energies of the peaks increase approximately linearly with ${Z}_{1}$ at a rate of \ensuremath{\sim}1 eV/Z. These energy shifts are compared with Hartree-Fock calculations of the x-ray energies for various members of $M$-shell ($3s \mathrm{and} 3p$) electronic vacancies. Peak widths range from 10 to 37 eV, increasing monotonically with ${Z}_{1}$ for most peaks and increasing monotonically with $n$ for all projectiles. No variation of centroid positions or peak widths was observed for different values of ${E}_{1}$ and fixed ${Z}_{1}$. The observed energy shifts and peak-width variations are discussed in terms of ionization of the $M$ shell, varying distributions of $L$-shell vacancies among the $2s$ and $2p$ subshells, and possible multiplet splittings.

Absolute C K x-ray production cross-section measurements using 18--26-MeV protons on thin carbon foils extend the range of previous measurements in the asymptotic region. These measurements permit extraction of the two main parameters of the asymptotic theory, viz., M/sup 2//sub tot/ = 0.84 and C/sub tot/ = 8.2, which are in good agreement with those obtained in previous work at lower energies. The ionization cross sections extracted from these measurements are compared with the predictions of the asymptotic theory as well as the binary-encounter, semiclassical, and plane-wave Born approximation theories.