SINGLE-CENTERED CALCULATIONS OF EXCITATION AND ELECTRON REMOVAL IN INTERMEDIATE-ENERGY P+HE+ COLLISIONS

Single-centred finite Hilbert basis set calculations, using bases with a substantial number of orbitals, have been shown to accurately repro duce excitation and electron removal cross sections for the p + H(1s) and p + H(n = 2) systems. The present paper extends the method to the p + He+(1s) and p + He+(n = 2) collision systems at incident projectil e energies of 25 keV and above. Cross sections for 1s -->, 2l', 3l' an d 4l', 2s and 2p --> 3l' and 4l' excitation and for electron removal f rom the 1s, 2s and 2p are presented and compared to experiment and to other theoretical calculations.