ELECTRON CORRELATION IN MOMENTUM-SPACE FOR THE NEON-ATOM ISOELECTRONIC SEQUENCE FROM F- THROUGH AR8+

Accurate momentum-space properties for the neon-atom isoelectronic seq uence from F- through Ar8+ are calculated from highly accurate configu ration-interaction wave functions that were constructed according to a density convergence criteria. These results should provide a benchmar k to which calculations of momentum-space properties derived from othe r methods may be compared. Our results show that the inclusion of elec tron correlation has a smaller effect on these properties for the Ne s equence than on other isoelectronic sequences. The entropy sum is obse rved to increase with the inclusion of electron correlation which furt her substantiates the claim of its use as a measure of basis set or de nsity quality.