TY - JOUR
T1 - Three-Parameter Wave Functions for ns2-Orbitals in Alkali-Metal Negative Ions
AU - Abbadi, M. A.
AU - Al-Qasir, I. I.
AU - Khalifeh, J. M.
PY - 2003/7
Y1 - 2003/7
N2 - A three-parameter variational wave function is used to describe the binding energy of alkali-metal negative ions using a two-electron system in the ns2-state. Each electron is described by a modified screened hydrogenic wave function involving two free screening parameters denoted by c and a in addition to the core-screened nuclear charge, Z*. The model is applied to lithium, sodium, potassium, rubidium, and cesium anions, where the optimum values of the variational parameters are deduced through fitting the optimized energy to the available experimental values. It is also applied to group-II isoelectronic neutral atoms of Be, Mg, Ca, Sr, and Ba. The results of our calculation are compared with other two-electron methods.
AB - A three-parameter variational wave function is used to describe the binding energy of alkali-metal negative ions using a two-electron system in the ns2-state. Each electron is described by a modified screened hydrogenic wave function involving two free screening parameters denoted by c and a in addition to the core-screened nuclear charge, Z*. The model is applied to lithium, sodium, potassium, rubidium, and cesium anions, where the optimum values of the variational parameters are deduced through fitting the optimized energy to the available experimental values. It is also applied to group-II isoelectronic neutral atoms of Be, Mg, Ca, Sr, and Ba. The results of our calculation are compared with other two-electron methods.
KW - Electron affinity
KW - Electronic structure of atomic negative ions
KW - Photodetachment
KW - Variational techniques
UR - http://www.scopus.com/inward/record.url?scp=0347126590&partnerID=8YFLogxK
U2 - 10.1023/A:1025736213825
DO - 10.1023/A:1025736213825
M3 - Article
AN - SCOPUS:0347126590
SN - 0020-7748
VL - 42
SP - 1629
EP - 1639
JO - International Journal of Theoretical Physics
JF - International Journal of Theoretical Physics
IS - 7
ER -