Eur. Phys. J. D (2012) 66: 306
https://doi.org/10.1140/epjd/e2012-30503-8

Regular Article

Photoionization cross section of Sc XII

Physics Department, Xi’an University of Architecture and Technology, Xi’an 710055, P.R. China

^a e-mail: liangll501@sina.com

Received: 14 August 2012
Received in final form: 21 September 2012
Published online: 4 December 2012

Abstract

Relativistic calculations of photoionization cross sections of Ne-like Sc XII using the Breit-Pauli R-matrix method in close-coupling and LS-coupling approximation and fully relativistic distorted-wave method are reported. In present work, the relativistic distorted-wave method is employed to calculate the fine-structure energy levels and radial functions, and the Breit-Pauli R-matrix method is employed to calculate the photoionizaton cross sections. In present work, we calculated the photoionization cross sections of Sc XII for ejection of 2p or 2s electron from the ground 2s²2p⁶¹S₀ in jj-coupling and obtained the energy levels and widths of 2s²2p⁵ns ³P₁, 2s²2p⁵nd ¹P₁ (n = 21−30), 2s2p⁶np ³P₁ and 2s2p⁶np ¹P₁ (n = 5−15). The photoionization cross sections of Sc XII for ejection of 2p electron from the excited state 1s²2s²2p⁵3s^3,1P have been calculated in LS-coupling and obtained the energy levels and widths of 2s2p⁶ns ^1,3S and 2s2p⁶nd ^1,3D (n = 5−15).