中国物理B ›› 2018, Vol. 27 ›› Issue (10): 105201-105201.doi: 10.1088/1674-1056/27/10/105201

• PHYSICS OF GASES, PLASMAS, AND ELECTRIC DISCHARGES • 上一篇    下一篇

Ion population fraction calculations using improved screened hydrogenic model with l-splitting

Amjad Ali, G Shabbir Naz, Rukhsana Kouser, Ghazala Tasneem, M Saleem Shahzad, Aman-ur-Rehman, M H Nasim   

  1. 1 Department of Physics and Applied Mathematics, Pakistan Institute of Engineering, and Applied Sciences, Islamabad 45650, Pakistan;
    2 Department of Nuclear Engineering, Pakistan Institute of Engineering, and Applied Sciences, Islamabad 45650, Pakistan
  • 收稿日期:2018-05-02 修回日期:2018-06-14 出版日期:2018-10-05 发布日期:2018-10-05
  • 通讯作者: Amjad Ali E-mail:amjadali_11@pieas.edu.pk

Ion population fraction calculations using improved screened hydrogenic model with l-splitting

Amjad Ali1, G Shabbir Naz1, Rukhsana Kouser1, Ghazala Tasneem1, M Saleem Shahzad1, Aman-ur-Rehman2, M H Nasim1   

  1. 1 Department of Physics and Applied Mathematics, Pakistan Institute of Engineering, and Applied Sciences, Islamabad 45650, Pakistan;
    2 Department of Nuclear Engineering, Pakistan Institute of Engineering, and Applied Sciences, Islamabad 45650, Pakistan
  • Received:2018-05-02 Revised:2018-06-14 Online:2018-10-05 Published:2018-10-05
  • Contact: Amjad Ali E-mail:amjadali_11@pieas.edu.pk

摘要:

Ion population fraction (IPF) calculations are very important to understand the radiative spectrum emitted from the hot dense matter. IPF calculations require detailed knowledge of all the ions and correlation interactions between the electrons of an ion which are present in a plasma environment. The average atom models, e.g., screened hydrogenic model with l-splitting (SHML), now have the capabilities for such calculations and are becoming more popular for in line plasma calculations. In our previous work[Ali A, Shabbir Naz G, Shahzad M S, Kouser R, Rehman A and Nasim M H 2018 High Energy Density Phys. 26 48], we have improved the continuum lowering model and included the exchange and correlation effects in SHML. This study presents the calculation of IPF using classical theory of fluctuation for our improved screened hydrogenic model with l-splitting (I-SHML) under local thermodynamic equilibrium conditions for iron and aluminum plasma over a wide range of densities and temperatures. We have compared our results with other models and have found a very good agreement among them.

关键词: self-consistent average atom model, average ionization state, ion population

Abstract:

Ion population fraction (IPF) calculations are very important to understand the radiative spectrum emitted from the hot dense matter. IPF calculations require detailed knowledge of all the ions and correlation interactions between the electrons of an ion which are present in a plasma environment. The average atom models, e.g., screened hydrogenic model with l-splitting (SHML), now have the capabilities for such calculations and are becoming more popular for in line plasma calculations. In our previous work[Ali A, Shabbir Naz G, Shahzad M S, Kouser R, Rehman A and Nasim M H 2018 High Energy Density Phys. 26 48], we have improved the continuum lowering model and included the exchange and correlation effects in SHML. This study presents the calculation of IPF using classical theory of fluctuation for our improved screened hydrogenic model with l-splitting (I-SHML) under local thermodynamic equilibrium conditions for iron and aluminum plasma over a wide range of densities and temperatures. We have compared our results with other models and have found a very good agreement among them.

Key words: self-consistent average atom model, average ionization state, ion population

中图分类号:  (Emission, absorption, and scattering of electromagnetic radiation ?)

  • 52.25.Os
32.30.-r (Atomic spectra?) 31.15.xr (Self-consistent-field methods)