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Indian Journal of Physics

, Volume 93, Issue 2, pp 267–277 | Cite as

Relativistic photoionization of H-isoelectronic series including plasma shielding effects

  • Xugen Zheng
  • Hsin-Chang Chi
  • Shin-Ted Lin
  • Gang Jiang
  • Chenkai Qiao
  • Keh-Ning HuangEmail author
Original Paper

Abstract

With plasma shielding effects of the Debye–Hückel model, we investigate the relativistic photoionization processes of H, \({{\hbox {Nb}}}^{40+}\) and \({{\hbox {Pb}}}^{81+}\) plasmas in the H-isoelectronic series. The shielded nuclear potential of Yukawa type experienced by the electron is parameterized by Debye length D. To account for relativistic effects non-perturbatively, we solve the Dirac equation for the bound as well as continuum wavefunctions. Contributions from multipole fields are calculated for high incident photon energies, while the angular distribution and spin polarization parameters of photoelectrons are provided in the electric dipole approximation. Our results of photoionization cross sections for the H plasma agree with other available theoretical calculations. The interplay between the relativistic and plasma shielding effects on the photoionization parameters is also studied.

Keywords

Photoionization Multipole effect Debye plasma Hydrogen atom Hydrogen-like ions 

PACS Nos.

31.15.xr 31.30.jc 32.80.Fb 52.25.Jm 

Notes

Acknowledgements

The author Xugen Zheng would like to thank Long Jiang for his assistance at the preliminary stage of this study. The authors acknowledge the support by the National Natural Science Foundation of China under Grant Numbers 11474209 and 11474208.

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Copyright information

© Indian Association for the Cultivation of Science 2018

Authors and Affiliations

  1. 1.Institute of Atomic and Molecular PhysicsSichuan UniversityChengduChina
  2. 2.Department of PhysicsNational Dong Hwa UniversityShoufengChina
  3. 3.College of Physical Science and TechnologySichuan UniversityChengduChina
  4. 4.Department of PhysicsNational Taiwan UniversityTaipeiChina

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