Excitation of the He( and ) States by 15-100-keV Bombardment
J. T. Park, V. Pol, J. Lawler, and J. George
Phys. Rev. Lett. 30, 1013 (1973) - Published 21 May, 1973
Impact-Parameter Dependence of the Probability for Copper -Shell Ionization by Oxygen Projectiles
C. L. Cocke and R. Randall
Phys. Rev. Lett. 30, 1016 (1973) - Published 21 May, 1973