Effect of confinement and interchannel coupling on high-Z atoms

28th International Conference on Photonic, Electronic and Atomic Collisions

Kumar, Ashish^1 ; Varma, H.R.^1 ; Deshmukh, P.C.^1,2 ; Manson, S.T.^3

School of Basic Science, Indian Institute of Technology, Mandi

175001, India^1

Department of Physics, Indian Institute of Technology, Madras

100049, India^2

Department of Physics and Astronomy, Georgia State University, Atlanta

GA

30303, United States^3

关键词: Combined effect;    Interchannel coupling;    Many-electron correlations;    Outer shells;    Relativistic interaction;    Relativistic random-phase approximation;    Subshells;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/488/2/022042/pdf
DOI  :  10.1088/1742-6596/488/2/022042

来源: IOP

【 摘 要 】

Photoionization studies of outer shells of high-Z atoms like Radon (Z=86) and Radium (Z=88) have been studied using relativistic random phase approximation (RRPA) [1,2]. Multiple minima found in the pho-toionization cross section were attributed to many electron correlations resulting from interchannel coupling with photoionization channels from neighboring subshells. In the present work, we report the combined effect of confinement, correlation and relativistic interactions on the structure of these multiple minima in high-Z atoms by using the RRPA.