Electron Capture by U91+ and U92+ and Ionization of U90+ and U91+

Abstract

Experimental cross sections at energies of 962 and 437 MeV/nucleon are reported for ${\mathrm{U}}^{92+}$ ⇄ ${\mathrm{U}}^{91+}$ and ${\mathrm{U}}^{91+}$ ⇄ ${\mathrm{U}}^{90+}$ in Mylar, Cu, and Ta, as well as equilibrium charge-state distributions in these materials. At 962 MeV/nucleon a beam containing over 85% bare ${\mathrm{U}}^{92+}$ nuclei is obtained.