Some aspects of satellite spin effects on spherical probe measurements in a magnetized plasma

1993 ◽  
Vol 20 (5) ◽  
pp. 347-350 ◽  
Author(s):  
A. Hilgers ◽  
B. Holback
Keyword(s):  
Magnetized Plasma ◽  
Spin Effects ◽  
Spherical Probe ◽  
Satellite Spin ◽  
Probe Measurements

Probe measurements of electron temperature and density in strongly magnetized plasma

2000 ◽  
Vol 71 (9) ◽  
pp. 3382-3384 ◽  
Author(s):  
S. V. Ratynskaia ◽  
V. I. Demidov ◽  
K. Rypdal
Keyword(s):  
Electron Temperature ◽  
Magnetized Plasma ◽  
Probe Measurements

A classical relativistic hydrodynamical model for strong EM wave-spin plasma interaction

2021 ◽  
Author(s):  
Qianglin Hu ◽  
Wen Hu
Keyword(s):  
Ponderomotive Force ◽  
Lagrange Equation ◽  
Relativistic Effects ◽  
High Energy ◽  
Magnetized Plasma ◽  
Relativistic Electrons ◽  
Plasma Interaction ◽  
Spin Effects ◽  
Relativistic Factor ◽  
Time Component

Abstract Based on the covariant Lagrangian function and Euler-Lagrange equation, a set of classical fluid equations for strong EM wave-spin plasma interaction is derived. Analysis shows that the relativistic effects may affect the interaction processes by three factors: the relativistic factor, the time component of four-spin, and the velocity-field coupling. This set of equations can be used to discuss the collective spin effects of relativistic electrons in classical regime, such as astrophysics, high-energy laser-plasma systems and so on. As an example, the spin induced ponderomotive force in the interaction of strong EM wave and magnetized plasma is investigated. Results show that the time component of four-spin, which approaches to zero in nonrelativistic situations, can increase the spin-ponderomotive force obviously in relativistic situation.

scholarly journals Comparative study of the surface potential of magnetic and non-magnetic spherical objects in a magnetized radio-frequency discharge

2020 ◽  
Vol 86 (5) ◽  
Author(s):  
Mangilal Choudhary ◽  
Roman Bergert ◽  
Slobodan Mitic ◽  
Markus H. Thoma
Keyword(s):  
Magnetic Field ◽  
Surface Potential ◽  
Debye Length ◽  
Rate Of Change ◽  
Magnetized Plasma ◽  
Dust Particles ◽  
Capacitively Coupled ◽  
Spherical Probe ◽  
Field Diffusion ◽  
Magnetic Sphere

We report measurements of the time-averaged surface floating potential of magnetic and non-magnetic spherical probes (or large dust particles) immersed in a magnetized capacitively coupled discharge. In this study, the size of the spherical probes is taken greater than the Debye length. The surface potential of a spherical probe first increases, i.e. becomes more negative at low magnetic field ( $B < 0.05\ \textrm {T}$ ), attains a maximum value and decreases with further increase of the magnetic field strength ( $B > 0.05\ \textrm {T}$ ). The rate of change of the surface potential in the presence of a $B$ -field mainly depends on the background plasma and types of material of the objects. The results show that the surface potential of the magnetic sphere is higher (more negative) compared with the non-magnetic spherical probe. Hence, the smaller magnetic sphere collects more negative charges on its surface than a bigger non-magnetic sphere in a magnetized plasma. The different sized spherical probes have nearly the same surface potential above a threshold magnetic field ( $B > 0.03\ \textrm {T}$ ), implying a smaller role of size dependence on the surface potential of spherical objects. The variation of the surface potential of the spherical probes is understood on the basis of a modification of the collection currents to their surface due to charge confinement and cross-field diffusion in the presence of an external magnetic field.

Pulsed spherical probe measurements in flames

1971 ◽  
Vol 59 (4) ◽  
pp. 706-707 ◽  
Author(s):  
R.M. Clements ◽  
P.R. Smy
Keyword(s):  
Spherical Probe ◽  
Probe Measurements

Impedance of a spherical probe immersed in a warm magnetized plasma

Radio Science ◽  
1981 ◽  
Vol 16 (3) ◽  
pp. 399-408 ◽  
Author(s):  
Takao Fujita ◽  
Saburo Adachi
Keyword(s):  
Magnetized Plasma ◽  
Spherical Probe

Electric probe measurements in a moving and magnetized plasma

1970 ◽  
Vol 12 (11) ◽  
pp. 831-838 ◽  
Author(s):  
L Lindberg ◽  
L Kristoferson
Keyword(s):  
Magnetized Plasma ◽  
Electric Probe ◽  
Probe Measurements
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