2. Temperature dependences of partial coefficients of recombination of HeNe+ ions and electrons A spectroscopic study of population of the excited 3s 2-3s 5 states (in Paschen’s notation) of neon atoms of the 2p 55s configuration was carried out in a... VA Ivanov,AS Petrovskaya,YE S...
Numerical studies of the neon atom verify that this model behavior applies to real many‐electron systems. The pair‐coupling terms beyond third‐order contribute less than 1% of the total correlation energy in a variety of atoms and molecules and can therefore be neglected. As a practical test...