Effect of electron reflection on magnetized plasma sheath in an oblique magnetic field

2015 ◽  
Vol 22 (9) ◽  
pp. 093505 ◽  
Author(s):  
Ting-Ting Wang ◽  
J. X. Ma ◽  
Zi-An Wei
Keyword(s):  
Magnetic Field ◽  
Plasma Sheath ◽  
Magnetized Plasma ◽  
Electron Reflection ◽  
Oblique Magnetic Field

scholarly journals BEAT FREQUENCY AND VELOCITY VARIATION OF IONS IN A MAGNETIZED PLASMA SHEATH FOR DIFFERENT OBLIQUENESS OF THE MAGNETIC FIELD

2019 ◽  
Vol 23 (1) ◽  
pp. 88-92
Author(s):  
B. R. Adhikari ◽  
S. Basnet ◽  
H. P. Lamichhane ◽  
R. Khanal
Keyword(s):  
Magnetic Field ◽  
Beat Frequency ◽  
Maximum Amplitude ◽  
Mean Value ◽  
Plasma Sheath ◽  
Magnetized Plasma ◽  
Velocity Variation ◽  
Constant Frequency ◽  
Mean Values ◽  
The Mean

 Beat frequency and velocity variation of ions in a magnetized plasma sheath has been numerically investigated by using a kinetic trajectory simulation (KTS) model for varying obliqueness of the external magnetic field in presence of an electric field. Angular dependence of mean value, maximum amplitude, damping constant, frequency of oscillation and beat frequency have been studied. As the obliqueness of the field changes the mean values, beat frequency as well as the maximum amplitude of the velocity components also change but frequency of oscillation remains almost the same.

Nonlinear interaction of intense left- and right-hand polarized laser pulse with hot magnetized plasma

2017 ◽  
Vol 83 (4) ◽  
Author(s):  
M. Abedi-Varaki ◽  
S. Jafari
Keyword(s):  
Magnetic Field ◽  
Laser Pulse ◽  
Plasma Temperature ◽  
Spot Size ◽  
Magnetized Plasma ◽  
Laser Spot Size ◽  
Self Focusing ◽  
Right Hand ◽  
Left And Right ◽  
Oblique Magnetic Field

In this article, self-focusing of an intense circularly polarized laser pulse in the presence of an external oblique magnetic field in hot magnetized plasma, using Maxwell’s equations and the relativistic fluid momentum equation, is studied. An envelope equation governing the spot size of the laser beam for both of left- and right-hand polarizations has been derived and the effects of the plasma temperature and oblique magnetic field on the electron density distribution of hot plasma with respect to variation of the normalized laser spot size has been investigated. Numerical results depict that in right-hand polarization, self-focusing of the laser pulse along the propagation direction in hot magnetized plasma becomes better and more compressed with increasing $\unicode[STIX]{x1D703}$. Inversely, in left-hand polarization, increase of $\unicode[STIX]{x1D703}$ in an oblique magnetic field leads to enhancement of the spot size and reduction self-focusing. Besides, in the plasma density profile, self-focusing of the laser pulse improves in comparison with no oblique magnetic field. Also it is shown that plasma temperature has a key role in the laser spot size, normalized laser output power and the variation of plasma density.

RF plasma sheath in an oblique magnetic field

Vacuum ◽  
2006 ◽  
Vol 80 (11-12) ◽  
pp. 1206-1210 ◽  
Author(s):  
Jin-Yuan Liu ◽  
Fei Zhao ◽  
Xiu Zou ◽  
Yu Zhang ◽  
Yue Liu ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Plasma Sheath ◽  
Rf Plasma ◽  
Oblique Magnetic Field

scholarly journals Temporal Ion Velocity Variation with Obliqueness in Magnetized Plasma Sheath

2021 ◽  
Vol 7 (2) ◽  
pp. 138-143
Author(s):  
B. R. Adhikari ◽  
R. Khanal
Keyword(s):  
Magnetic Field ◽  
Plasma Sheath ◽  
Magnetized Plasma ◽  
Velocity Variation ◽  
Physical Parameters ◽  
Sheath Region ◽  
Narrow Region ◽  
Force Equation ◽  
Ion Velocity ◽  
External Oblique Magnetic Field

A narrow region having sharp gradients in physical parameters is formed whenever plasma comes into contact with a material wall. In this work, the temporal velocity variation of ions in such a sheath has been studied in the presence of an external oblique magnetic field. The Lorentz force equation has been solved for the given boundary conditions using Runge-Kutta method. In order to satisfy the Bohm criterion, ions enter the sheath region with ion acoustic velocity. It is observed that all components of the velocity waves are damped in plasma in the time scale of one second. The computed oscillatory part of ion velocity match with the equation of the damped harmonic oscillator. Thus obtained damping constants as well as the frequency of all three components are nearly equal for obliqueness less than 600 after which they are distinctly different. This is due to the fact that the magnetic field becomes almost parallel to the wall. In earlier studies, only the final velocity profiles are reported and hence this study is useful in understanding how the ion velocities evolve in time as they move from sheath entrance towards the wall.

scholarly journals Variation of velocity component of ions in a magnetized plasma sheath for different obliqueness of the magnetic field

2019 ◽  
Vol 8 ◽  
pp. 71-78
Author(s):  
Bhesha Raj Adhikari ◽  
Suresh Basnet ◽  
Hari Prasad Lamichhane ◽  
Raju Khanal
Keyword(s):  
Magnetic Field ◽  
Velocity Component ◽  
Full Text ◽  
Plasma Sheath ◽  
Magnetized Plasma ◽  
The Magnetic Field

available with full text.

Dust-Plasma Sheath in an Oblique Magnetic Field

2008 ◽  
Author(s):  
G. Foroutan ◽  
H. Mehdipour ◽  
José Tito Mendonça ◽  
David P. Resendes ◽  
Padma K. Shukla
Keyword(s):  
Magnetic Field ◽  
Plasma Sheath ◽  
Dust Plasma ◽  
Oblique Magnetic Field
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