Figure 3. Variations depending on the position of the effective potential of the carbon atom in its ground state (a) and its first three excited states (b, c, d)

From

Numerical Study of Density Functional Theory of Multi-electronic Atoms: Case of Carbon and Helium

Yande DIOUF, Kharouna TALLA, Saïdou DIALLO, Louis GOMIS

American Journal of Nanomaterials. 2021, 9(1), 12-22 doi:10.12691/ajn-9-1-2