ON THE CHARACTERISTICS OF A GLOW DISCHARGE BETWEEN COAXIAL CYLINDERS IMMERSED IN A MAGNETIC FIELD

1963 ◽  
Author(s):  
Joseph E. Hoffman
Keyword(s):  
Magnetic Field ◽  
Glow Discharge ◽  
Coaxial Cylinders

Some Aspects of the Glow Discharge Between Coaxial Cylinders in the Presence of a Non-Homogeneous Axial Magnetic Field

1948 ◽  
Vol 1 (4) ◽  
pp. 400
Author(s):  
JM Somerville ◽  
KSW Champion ◽  
EK Bigg
Keyword(s):  
Magnetic Field ◽  
Glow Discharge ◽  
Axial Magnetic Field ◽  
Outer Cylinder ◽  
Negative Resistance ◽  
Coaxial Cylinders ◽  
Maximum Magnetic Field

The characteristics of the glow discharge in air between coaxial cylindrical electrodes in the presence of a non-homogeneous axial magnetic field are described. With the outer cylinder as cathode the discharge is narrow and takes place near the position of maximum magnetic field. If the cathode is cut transversely into halves dividing the discharge there may be a negative incremental resistance between these halves. This negative resistance may be used as the basis of an oscillator working with an efficiency of about 70 per cent. up to frequencies of about 100 kilocycles per second.

scholarly journals DC Glow Discharge in Axial Magnetic Field at Low Pressures

2017 ◽  
Vol 2017 ◽  
pp. 1-8 ◽  
Author(s):  
Shen Gao ◽  
Shixiu Chen ◽  
Zengchao Ji ◽  
Wei Tian ◽  
Jun Chen
Keyword(s):  
Magnetic Field ◽  
Glow Discharge ◽  
Differential Equations ◽  
Axial Magnetic Field ◽  
Glow Discharge Plasma ◽  
Dc Glow Discharge ◽  
Fluid Approximation ◽  
Low Pressures ◽  
Physical Quantities ◽  
The Magnetic Field

On the basis of fluid approximation, an improved version of the model for the description of dc glow discharge plasma in the axial magnetic field was successfully developed. The model has yielded a set of analytic formulas for the physical quantities concerned from the electron and ion fluids equations and Poisson equation. The calculated results satisfy the practical boundary conditions. Results obtained from the model reveal that although the differential equations under the condition of axial magnetic field are consistent with the differential equations without considering the magnetic field, the solution of the equations is not completely consistent. The results show that the stronger the magnetic field, the greater the plasma density.

The stability of viscous flow in a curved channel in the presence of a magnetic field

1961 ◽  
Vol 264 (1317) ◽  
pp. 155-164 ◽  
Keyword(s):  
Magnetic Field ◽  
Viscous Flow ◽  
Uniform Magnetic Field ◽  
Axial Direction ◽  
Electrical Conductor ◽  
Curved Channel ◽  
Coaxial Cylinders ◽  
Transverse Pressure ◽  
The Stability ◽  
The Magnetic Field

The stability of viscous flow between two coaxial cylinders maintained by a constant transverse pressure gradient is considered when the fluid is an electrical conductor and a uniform magnetic field is impressed in the axial direction. The problem is solved and the dependence of the critical number for the onset of instability on the strength of the magnetic field and the coefficient of electrical conductivity of the fluid is determined.

Sign in / Sign up

Export Citation Format

Share Document