Effects of self-generated magnetic fields on Raman backscattering in a homogeneous plasma

Laham, N. M.

doi:10.1088/0031-8949/52/6/014

Cited by 3 publications

(2 citation statements)

References 23 publications

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“…Recently Laham [34] examined the e †ect of the toroidal magnetic Ðeld on the growth rate of backward Raman scattering (BRS) instability in underdense homogeneous plasma, and derived analytically a general expression for the growth rate of this instability which showed a reduction in the growth rate due to the presence of the toroidal selfgenerated magnetic Ðeld.…”

Section: Introductionmentioning

confidence: 99%

Effects of Axial Magnetic Fields on Backward Raman Scattering in Inhomogeneous Plasmas

1998

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The effects of an axial magnetic field on the convective amplification and the threshold intensity of Raman backscattering instability in an underdense, inhomogeneous plasma is investigated. Two cases of incident pump wave were considered. For the R-circularly polarization case it is shown that the amplification factor increases with the magnetic field, it also increases with the plasma density while the threshold intensity decreases. For the L-circularly polarization case, it is shown that the amplification factor decreases as the magnetic field and the plasma density increase, while the threshold intensity increases as the magnetic field increases but it decreases as the plasma density increases.

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Section: Introductionmentioning

confidence: 99%

Effects of Axial Magnetic Fields on Backward Raman Scattering in Inhomogeneous Plasmas

1998

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“…11 The QMF has relevant consequences: it can influence the propagation of the laser pulse, 8 modify the plasma density profile, 12 and reduce the growth rate of the Raman backscattering instability. 13 The main objective of this work is to derive a general evolution equation for the QMF in a relativistic regime, and use the derived equation to investigate the magnetic field driven by the ionization front mechanism. Previously, a nonrelativistic equation was derived in Ref.…”

Section: Magnetic Field Generated By Ionization Front Produced By Intmentioning

confidence: 99%

Magnetic field generated by ionization front produced by intense laser radiating gas

Zeng

1999

Physics of Plasmas

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A general evolution equation for the quasistatic magnetic field (QMF) in a relativistic regime is derived, and an ionization front mechanism for QMF generation is proposed. The properties of the QMF produced by the ionization front mechanism are investigated numerically: The direction of the QMF changes periodically along the direction of the laser propagation, and the generated magnetic field depends on the temperature of the electron plasma and on the effective radial width of the ionization front.

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

Paknezhad

2015

Laser Part. Beams

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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.

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Effects of self-generated magnetic fields on Raman backscattering in a homogeneous plasma

Cited by 3 publications

References 23 publications

Effects of Axial Magnetic Fields on Backward Raman Scattering in Inhomogeneous Plasmas

Effects of Axial Magnetic Fields on Backward Raman Scattering in Inhomogeneous Plasmas

Magnetic field generated by ionization front produced by intense laser radiating gas

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

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