Complex‐scaling calculations for resonance states of he with screened coulomb potentials. Issue 24 (1st July 2013)

• Record Type: Journal Article
• Authors: Jiao, Li Guang; Ho, Yew Kam
• Is Part Of: International journal of quantum chemistry. Volume 113:Issue 24(2013:Dec. 15)
• Page Start: 2569
• Page End: 2579
• Publication Date: 2013-07-01
• Subjects: Quantum chemistry -- Periodicals; 541.28
• DOI: 10.1002/qua.24504
• Languages: English
• ISSNs: 0020-7608

Abstract

<abstract abstract-type="main"> <title> <x xml:space="preserve">Abstract</x> </title> <p>The doubly excited ¹<italic>S</italic>^{<italic>e</italic>}, ¹<italic>P</italic>^{<italic>o</italic>}, and ¹<italic>D</italic>^{<italic>e</italic>} 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⁺(<italic>N</italic> = 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⁺(<italic>N</italic> = 2) threshold are in good agreement with previous calculations by the stabilization method with correlated basis wave functions. The ¹<italic>P</italic>^{<italic>o</italic>} and ¹<italic>D</italic>^{<italic>e</italic>} resonance states lying below the He⁺(<italic>N</italic> = 3 and 4) thresholds in the screening environment are reported for the first time. © 2013 Wiley Periodicals, Inc.</p> </abstract>