Figure 4. Resonance excitation energies ΔE (2s → 2p) of the lithium isoelectronic sequence: VMC values of this work (symbols with error bars) compared with the differences of the FCPC reference energies (full line)

From

Variational Monte Carlo Study of the (1s2 2s) 2Se, (1s2 2p) 2Po and (1s2s2p) 4Po States of the Lithium Isoelectronic Sequence

Boubacar Sow, Babou Diop, Malick Sow, Omar Absatou Niass

International Journal of Physics. 2026, 14(4), 86-92 doi:10.12691/ijp-14-4-2