ELECTRON-IMPACT MULTIPLE IONIZATION OF SINGLY AND MULTIPLY-CHARGED TITANIUM IONS

Using the crossed-beams technique the following absolute cross section s sigma(q.q+n) have been measured for the reaction e(-) + Tiq+ --> Ti( q+n+) + (N+1)e(-): double ionization sigma(1.3) sigma(2.4) sigma(3.5) sigma(4.6) sigma(5.7) sigma(6.8) triple ionization sigma(1.4) sigma(2. 5) sigma(3.6) quadruple ionization sigma(1.5) sigma(2.6) Measurements for high charge states and ionization degrees, respectively, show sign ificant contributions of inner-shell processes which partly dominate t he respective cross section. The results are compared with the scaling laws of Fisher et al and the semiempirical formula published by Sheve lko and Tawara, respectively.