中国物理B ›› 2019, Vol. 28 ›› Issue (8): 83201-083201.doi: 10.1088/1674-1056/28/8/083201

• SPECIAL TOPIC—Recent advances in thermoelectric materials and devices • 上一篇    下一篇

Ellipticity-dependent ionization yield for noble atoms

Hristina Delibašić, Violeta Petrović   

  1. Faculty of Science, University of Kragujevac, Radoja Domanovića 12, 34000 Kragujevac, Serbia
  • 收稿日期:2019-04-15 修回日期:2019-05-27 出版日期:2019-08-05 发布日期:2019-08-05
  • 通讯作者: Hristina Delibašić E-mail:hristinadelibasic@gmail.com
  • 基金资助:

    Project supported by the Science Foundation from the Serbian Ministry of Education, Science and Technological Development (Grant No. 171020).

Ellipticity-dependent ionization yield for noble atoms

Hristina Delibaši?, Violeta Petrovi?   

  1. Faculty of Science, University of Kragujevac, Radoja Domanovi?a 12, 34000 Kragujevac, Serbia
  • Received:2019-04-15 Revised:2019-05-27 Online:2019-08-05 Published:2019-08-05
  • Contact: Hristina Delibašić E-mail:hristinadelibasic@gmail.com
  • Supported by:

    Project supported by the Science Foundation from the Serbian Ministry of Education, Science and Technological Development (Grant No. 171020).

摘要:

The photoionization in the frame of the Ammosov-Delone-Krainov theory has been theoretically examined for noble gases, argon, krypton, and xenon, in an elliptically polarized laser field. We consider the intermediate range of the Keldysh parameter, γ~1, and analyze the influence of shifted ionization potential and temporal profile to eliminate disagreement between theoretical and experimental findings. By including these effects in the ionization rates, we solve rate equations in order to determine an expression for the ionization yield. The use of modified ionization potential shows that the ionization yields will actually decrease below the values predicted by original (uncorrected) formulas. This paper will discuss the causes of this discrepancy.

关键词: elliptical polarization, ponderomotive potential, Stark effect, Gaussian laser pulse

Abstract:

The photoionization in the frame of the Ammosov-Delone-Krainov theory has been theoretically examined for noble gases, argon, krypton, and xenon, in an elliptically polarized laser field. We consider the intermediate range of the Keldysh parameter, γ~1, and analyze the influence of shifted ionization potential and temporal profile to eliminate disagreement between theoretical and experimental findings. By including these effects in the ionization rates, we solve rate equations in order to determine an expression for the ionization yield. The use of modified ionization potential shows that the ionization yields will actually decrease below the values predicted by original (uncorrected) formulas. This paper will discuss the causes of this discrepancy.

Key words: elliptical polarization, ponderomotive potential, Stark effect, Gaussian laser pulse

中图分类号:  (Photoionization and excitation)

  • 32.80.-t
32.80.Fb (Photoionization of atoms and ions)