The inverse Bremsstrahlung absorption in the presence of Maxwellian and non-Maxwellian electrons

doi:10.1088/1674-1056/ab4173

中国物理B ›› 2019, Vol. 28 ›› Issue (10): 105202-105202.doi: 10.1088/1674-1056/ab4173

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

The inverse Bremsstrahlung absorption in the presence of Maxwellian and non-Maxwellian electrons

Mehdi Sharifian, Fatemeh Ghoveisi, Leila Gholamzadeh, Narges Firouzi Farrashbandi

Physics Department, Yazd University, Safaeyeh, Yazd, P. O. Box 891995-741, Iran

收稿日期:2019-04-30 修回日期:2019-07-29 出版日期:2019-10-05 发布日期:2019-10-05
通讯作者: Mehdi Sharifian E-mail:mehdi.sharifian@yazd.ac.ir

The inverse Bremsstrahlung absorption in the presence of Maxwellian and non-Maxwellian electrons

Mehdi Sharifian, Fatemeh Ghoveisi, Leila Gholamzadeh, Narges Firouzi Farrashbandi

Physics Department, Yazd University, Safaeyeh, Yazd, P. O. Box 891995-741, Iran

Received:2019-04-30 Revised:2019-07-29 Online:2019-10-05 Published:2019-10-05
Contact: Mehdi Sharifian E-mail:mehdi.sharifian@yazd.ac.ir

摘要/Abstract

摘要： Inverse Bremsstrahlung absorption (IBA) of an intense laser field in plasma containing Maxwellian and non-Maxwellian (with Kappa and q-nonextensive distribution functions) electrons is studied analytically. Our results show that IBA decreases with an increase in temperature at high intensities and a decrease in plasma density for all kinds of distribution functions. Another striking result is that IBA is independent of the laser intensity at low intensity but is dependent on it when the intensity is going to rise. Also, it could be find that the behavior of the absorption as the function of laser intensity for the Kappa distribution with κ=10 at low intensity is close to that for the Maxwellian distribution, but at high intensity it is close to that in the presence of q-nonextensive electrons with q=0.9. These results provide insights into the inverse Bremsstrahlung absorption in the laser-plasma interactions.

关键词: laser-plasmas interaction, inverse Bremsstrahlung absorption, Maxwellian distribution, Kappa distribution, q-nonextensive distribution

Abstract: Inverse Bremsstrahlung absorption (IBA) of an intense laser field in plasma containing Maxwellian and non-Maxwellian (with Kappa and q-nonextensive distribution functions) electrons is studied analytically. Our results show that IBA decreases with an increase in temperature at high intensities and a decrease in plasma density for all kinds of distribution functions. Another striking result is that IBA is independent of the laser intensity at low intensity but is dependent on it when the intensity is going to rise. Also, it could be find that the behavior of the absorption as the function of laser intensity for the Kappa distribution with κ=10 at low intensity is close to that for the Maxwellian distribution, but at high intensity it is close to that in the presence of q-nonextensive electrons with q=0.9. These results provide insights into the inverse Bremsstrahlung absorption in the laser-plasma interactions.

Key words: laser-plasmas interaction, inverse Bremsstrahlung absorption, Maxwellian distribution, Kappa distribution, q-nonextensive distribution

中图分类号: (Electron collisions)

52.20.Fs

52.25.Dg (Plasma kinetic equations) 52.38.-r (Laser-plasma interactions) 52.38.Dx (Laser light absorption in plasmas (collisional, parametric, etc.))

Mehdi Sharifian, Fatemeh Ghoveisi, Leila Gholamzadeh, Narges Firouzi Farrashbandi. The inverse Bremsstrahlung absorption in the presence of Maxwellian and non-Maxwellian electrons[J]. 中国物理B, 2019, 28(10): 105202-105202.

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The inverse Bremsstrahlung absorption in the presence of Maxwellian and non-Maxwellian electrons

The inverse Bremsstrahlung absorption in the presence of Maxwellian and non-Maxwellian electrons

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