Inverse Braking Radiation and Resonance Absorption in Corona Plasmas of Inertial Confinement Fusion

Journal of Optoelectronical Nanostructures

مقاله 3، دوره 5، شماره 1 - شماره پیاپی 17، اردیبهشت 2020، صفحه 35-48   

نوع مقاله: Articles

نویسندگان

Ebrahim Heidari^{* 1}؛ حیدر ایزدنشان²؛ Mohammad Kouhi³

¹Department of Sciences, Bushehr Branch, Islamic Azad University, Bushehr, Iran

²عضو هیات علمی دانشگاه آزاد اسلامی واحد مرودشت

³Department of physics, Islamic Azad University, Tabriz Branch, Tabriz

تاریخ دریافت: 10 مرداد 1398،  تاریخ بازنگری: 06 آبان 1398،  تاریخ پذیرش: 03 اردیبهشت 1399 

چکیده

Abstract: In this paper, combining the Maxwell equations with the electron balance
equation, we obtain the inverse braking radiation absorption coefficient in a laser fusion
corona plasma. For a fixed plasma temperature, variations of the absorption coefficient
versus the penetration depth into the plasma are illustrated numerically for different
values of laser wavelength. It is shown that, by increasing the skin depth of the laser
into the plasma, the absorption coefficient increases and tends to asymptotic value one.
The effect of plasma temperature on the absorption coefficient has also been
investigated. In addition, the fraction of absorbed energy for resonance absorption is
studied analytically and illustrated numerically. Moreover, the fractional absorption for
different laser wavelengths as well as different values of incident angle is illustrated. It
can be seen that, the maximum value of the absorption coefficient is independent of the
laser wavelength and is about 0.6 for all the wavelengths.

کلیدواژه‌ها

Bremsstrahlung؛ Corona Plasma؛ Resonance Absorption؛ Laser Fusion

مراجع

[1] M. Mansuri, A. Mir, A. F. orcid, Numerical Modeling of a Nanostructure Gas Sensor Based on Plasmonic Effect, JOPN, 4, (2019) 29.
[2] S. Pfalzner, An introduction to inertial confinement fusion, CRC Press (2006).
[3] J. D. Lindl R. L. McCrory, E. M. Campbell, Progress toward ignition and burn propagation in inertial confinement fusion, Phys. Today, 45, (1992) 32.
[4] E. Heidari, Ultra- Relativistic Solitons with Opposing Behaviors in Photon Gas Plasma, JOPN, 4, (2019) 27.
[5] R. Craxton et al., Direct-drive inertial confinement fusion: A review, Phys. Plasmas, 22, (2015) 110501.
[6] O. Hurricane et al., Fuel gain exceeding unity in an inertially confined fusion implosion, Nature, 506, (2014) 343.
[7] V. Gopalaswamy et al., Tripled yield in direct-drive laser fusion through statistical modelling, Nature, 565, (2019) 581.
[8] M. Olyaee, M. B. Tavakoli, A. Mokhtari, Propose, Analysis and Simulation of an All Optical Full Adder Based on Plasmonic Waves using Metal-Insulator-Metal Waveguide Structure, JOPN, 4, (2019) 95.
[9] L. M. Waganer, Innovation leads the way to attractive inertial fusion energy reactors–Prometheus-L and Prometheus-H, Fusion engineering and design, 25, (1994) 125.
[10] D. Eimerl et al., Configuring NIF for direct-drive experiments. in Solid State Lasers for Application to Inertial Confinement Fusion (ICF), International Society for Optics and Photonics. (1995).
[11] L. Safaei, M. Hatami, M. B. Zarandi, Numerical Analysis of Stability for Temporal Bright Solitons in a PT-Symmetric NLDC. JOPN, 2, (2017) 69.
[12] L. Safaei, M. Hatami, M. B. Zarandi. Effect of Relative Phase on the Stability of Temporal Bright Solitons in a PT- Symmetric NLDC, JOPN, 3, (2018) 37.
[13] R. Sato et al., Non-uniformity smoothing of direct-driven fuel target implosion by phase control in heavy ion inertial fusion, Scientific reports, 9, (2019) 6659.
[14] G. Pert, The analytic theory of linear resonant absorption, Plasma Physics, 20, (1978) 175.
[15] J. Freidberg R. Mitchell R. L. Morse, L. Rudsinski, Resonant absorption of laser light by plasma targets, Physical Rev. Lett., 28, (1972) 795.
[16] V. Tikhonchuk et al., Studies of laser-plasma interaction physics with low-density targets for direct-drive inertial confinement schemes, Matter and Radiation at Extremes, 4, (2019) 045402.
[17] W. Kruer, The physics of laser plasma interactions, CRC Press , (2018).
[18] S. Eliezer, The interaction of high-power lasers with plasmas, CRC press. (2002).
[19] O. Embréus A. Stahl, T. Fülِp, Effect of bremsstrahlung radiation emission on fast electrons in plasmas, New J. Phy., 18, (2016) 093023.
[20] E. I. Moses, C. R. Wuest, The National Ignition Facility: status and plans for laser fusion and high-energy-density experimental studies, Fusion Science and Technology, 43, (2003) 420.
[21] L. Schlessinger, J. Wright, Inverse-bremsstrahlung absorption rate in an intense laser field, Phys. Rev. A 20 (1979) 1934.
[22] B. Langdon, Nonlinear Inverse Bremsstrahlung and Heated-Electron Distributions, Phys. Rev. Lett. 44 (1980) 575.