Figure 4.
A comparison of effective collision strengths from 54- versus 130-term CI/CC LS-coupling R-matrix calculations for all inelastic transitions amongst the 54 lowest common terms of Al 9+ at Te = 106 K. ○: transitions with upper term n = 2; □: transitions with upper term n = 3; ⋄: transitions with upper term n = 4; dashed lines: 20 per cent fractional difference.