Abstract
Early theoretical work emphasized the gross trend of thetotal correlation energy of neutral atoms with atomic numberZ. Thiswas later improved quantitatively, by focusing on the number of pairings betweenantiparallel-spin electrons in the same main shell (i.e., K, L, M...shells).Here, this viewpoint is pressed, and correlation energies associated with s–s, s–pand p–p pairings are extracted. The s–s energy turns out to be rather insensitiveto a change from K to L shells, but a small increase is found to occur in the Mshell. Also, the s–p and p–p pairing energies show a small increase from the L tothe M shells. The s–s and s–p energies are ≈1 eV, thes–s contribution being the larger. The p–p energy is ≈1/3 eV.The effect of removing or adding one electron to the neutral atom has also beenanalysed. Wavefunction overlap and wavefunction localization appear to controlthe values of the pairing energies.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callMore From: Journal of Physics B: Atomic, Molecular and Optical Physics
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
