Hostname: page-component-78c5997874-m6dg7 Total loading time: 0 Render date: 2024-11-17T18:21:54.998Z Has data issue: false hasContentIssue false
  • English
  • Français

Effect of dc-magnetic field on the growth rate of Raman backscattering of X-mode laser in magnetized collisional plasma

Published online by Cambridge University Press:  09 December 2015

Alireza Paknezhad
Alireza Paknezhad*
Affiliation:
Department of Physics, Shabestar Branch, Islamic Azad University, Shabestar, Iran
*
Address correspondence and reprint requests to: A. Paknezhad, Department of Physics, Shabestar Branch, Islamic Azad University, Shabestar, Iran. E-mail: [email protected]
Get access Rights & Permissions [Opens in a new window]

Abstract

Stimulated Raman backward scattering of an X-mode laser beam propagating in a homogenous plasma is studied in the presence of a transverse magnetic field. As the laser propagates in its X-mode in plasma, it decays into an upper hybrid wave and a down-shifted sideband wave. Beating the incident laser with the sideband exerts a nonlinear ponderomotive force acting on plasma electrons driving the excited upper hybrid wave. The incident wave then parametrically couples with the upper hybrid wave to drive the sideband. Using the fluid model and nonlinear current density, the nonlinear ponderomotive force is obtained to find the dispersion relation of the scattered sideband wave and the growth rate of the instability in the weakly relativistic regime. It is shown that the growth rate decreases and the cut-off points in the normalized wave number of the upper-hybrid wave become smaller by increasing the static magnetic field.

Keywords

X-mode laserMagnetized plasmaPonderomotive forceGrowth rateWeakly relativistic regime
Type
Research Article
Information
Laser and Particle Beams , Volume 34 , Issue 1 , March 2016 , pp. 80 - 85
Copyright
Copyright © Cambridge University Press 2015 

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

REFERENCES

Barr, H.C., Boyd, T.J.M., Gardner, G.A. & Rankin, R. (1984a). Raman backscatter from an inhomogeneous magnetized plasma. Phys. Rev. Lett. 53, 462.Google Scholar
Barr, H.C., Boyd, T., Gordon, F. & Berwick, S. (1984b). Stimulated Raman scattering in plasmas produced by short intense laser pulses. Laser Part. Beams 13, 525–537.Google Scholar
Bawaaneh, M.S. (2006). Stimulated Brillouin scattering of X-waves in magnetized plasma. J. Plasma Phys. 72, 687–697.Google Scholar
Cho, M.H., Kim, Y.K. & Hur, M.S. (2014). Measuring the magnetic field of a magnetized plasma using Raman scattering. Appl. Phys. Lett. 104, 141107.Google Scholar
Drake, J.F., Kaw, P.K., Lee, Y.C., Schmid, G., Liu, C.S. & Marshall, N.R. (1974). Parametric instabilities of electromagnetic waves in plasmas. Phys. Fluids 17, 778.Google Scholar
Forslund, D.W., Kindel, J.M. & Lindman, E.L. (1975). Theory of stimulated scattering processes in laser irradiated plasmas. Phys. Fluids 18, 1002.CrossRefGoogle Scholar
Gill, T.S. & Saini, N.S. (2007). Nonlinear interaction of a rippled laser beam with an electrostatic upper hybrid wave in collisional plasma. Laser Part. Beams 25, 283–293.CrossRefGoogle Scholar
Grebogi, C. & Liu, C.S. (1980). Brillouin and Raman scattering of an extraordinary mode in a magnetized plasma. Phys. Fluids 23, 7.Google Scholar
Hassoon, K., Salih, H. & Tripathi, V.K. (2009). Stimulated Raman forward scattering of a laser in a plasma with transverse magnetic field. Phys. Scr. 80, 065501.Google Scholar
Jiang, X., Zhanjun, L. & Chunyang, Z. (2011). Effects of electron–ion collisions on stimulated Raman backward scattering under different electron densities. Plasma Sci. Technol. 13, 40.Google Scholar
Krall, N.A. & Trivelpiece, A.W. (1973). Principles of Plasma Physics, McGraw-Hill Inc.Google Scholar
Kruer, W.I. (1988). The Physics of Laser and Plasma Interaction, 1st edn, pp. 72–84. Wokingham, UK: Addison-Wesley.Google Scholar
Kruer, W.L. (2000). Interaction of plasmas with intense lasers. Phys. Plasmas 7, 6.Google Scholar
Liu, Z.J., Zhu, S.P., Cao, L.H., Zheng, C.Y., He, X.T. & Wang, Y. (2009). Enhancement of backward Raman scattering by electron–ion collisions. Phys. Plasmas 16, 112703.Google Scholar
Mckenna, P., Neely, D., Bingham, R. & Jaroszynski, D.A. (2013). Laser–Plasma Interactions and Applications. Switzerland: Springer International Publishing.CrossRefGoogle Scholar
Nabil, M.L. (1995). Effects of self-generated magnetic fields on Raman backscattering in a homogeneous plasma. Phys. Scripta. 52, 683–687.Google Scholar
Nicolai, P., Vandenboomgaerde, M., Canaud, B. & Chaigneau, F. (1994). Effects of self-generated magnetic fields and nonlocal electron transport in laser produced plasmas. Phys. Plasmas 7, 10.Google Scholar
Paknezhad, A. (2013a). Third harmonic stimulated Raman backscattering of laser in a magnetized plasma. Phys. Plasmas 20, 092108.Google Scholar
Paknezhad, A. (2013b). Nonlinear Raman forward scattering of a short laser pulse in a collisional transversely magnetized plasma. Phys. Plasmas 20, 012110.Google Scholar
Paknezhad, A. & Dorranian, D. (2011). Nonlinear backward Raman scattering in the short laser pulse interaction with a cold underdense transversely magnetized plasma. Laser Part. Beams 29, 373–380.Google Scholar
Saini, N.S. & Gill, T.S. (2004). Enhanced Raman scattering of a rippled laser beam in a magnetized collisional plasma. Laser Part. Beams 22, 35–40.Google Scholar
Sharma, R.P. & Dragila, R. (1988). Effect of a self-generated dc magnetic field on forward Raman scattering and hot electrons in laser-produced plasmas. Phys. Fluids 31, 1695.Google Scholar
Sharma, R.P., Monika, A., Sharma, P., Chauhan, P. & Ji, A. (2010). Interaction of high power laser beam with magnetized plasma and THz generation. Laser Part. Beams 28, 531–537.Google Scholar
Stamper, J.A., Mclean, E.A. & Ripin, B.H. (1978). Studies of spontaneous magnetic fields in laser-produced plasmas by Faraday rotation. Phys. Rev. Lett. 40, 1177.Google Scholar