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Complex‐scaling calculations for resonance states of he with screened coulomb potentials
Author(s) -
Jiao Li Guang,
Ho Yew Kam
Publication year - 2013
Publication title -
international journal of quantum chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.484
H-Index - 105
eISSN - 1097-461X
pISSN - 0020-7608
DOI - 10.1002/qua.24504
Subject(s) - resonance (particle physics) , excited state , scaling , wave function , coulomb , atomic physics , angular momentum , helium , physics , total angular momentum quantum number , basis (linear algebra) , momentum (technical analysis) , quantum mechanics , electron , mathematics , geometry , finance , economics
The doubly excited 1 S e , 1 P o , and 1 D e resonance states of helium atom with screened Coulomb potentials are investigated. The complex scaling method with configuration interaction type basis functions are employed to extract the resonances associated with the He + ( N = 2, 3, and 4) thresholds. 18 resonances (six below each of the He + threshold) for each angular‐momentum state are calculated. The results lying below the He + ( N = 2) threshold are in good agreement with previous calculations by the stabilization method with correlated basis wave functions. The 1 P o and 1 D e resonance states lying below the He + ( N = 3 and 4) thresholds in the screening environment are reported for the first time. © 2013 Wiley Periodicals, Inc.