TY - JOUR
T1 - THREE DIFFERENT SPATIAL POSITIONS OF FAST MAGNETOSONIC WAVE COMPONENT TURNING POINTS
AU - Girka, I. O.
AU - Trush, O. V.
AU - Tierens, W.
N1 - Publisher Copyright:
© 2024, National Science Center, Kharkov Institute of Physics and Technology. All rights reserved.
PY - 2024
Y1 - 2024
N2 - Two different approaches to defining the cut-off in a magnetoactive plasmas are well-known. In one approach, a physicist searches the cut-off frequency for uniform plasma, that is for fixed values of plasma parameters, such as the plasma composition, plasma particle densities and external static magnetic field. This cut-off frequency separates those frequencies, at which the electromagnetic wave is propagative, from those, at which it is evanescent one. In the other approach, a physicist searches the cut-off plasma particle density for the fixed frequency. The density is observed at the cut-off coordinate called in some text-books as “turning point” or “transition point”. This coordinate separates the space, within which the wave is propagative, from the space, within which the wave is evanescent one. The conditions for determining the turning points depend not only on the values of plasma parameters themselves but on the plasma parameter gradients as well. These conditions are determined for the case of the electromagnetic waves in ion cyclotron frequency range. Their deviation from the condition applied for the first approach is di scussed.
AB - Two different approaches to defining the cut-off in a magnetoactive plasmas are well-known. In one approach, a physicist searches the cut-off frequency for uniform plasma, that is for fixed values of plasma parameters, such as the plasma composition, plasma particle densities and external static magnetic field. This cut-off frequency separates those frequencies, at which the electromagnetic wave is propagative, from those, at which it is evanescent one. In the other approach, a physicist searches the cut-off plasma particle density for the fixed frequency. The density is observed at the cut-off coordinate called in some text-books as “turning point” or “transition point”. This coordinate separates the space, within which the wave is propagative, from the space, within which the wave is evanescent one. The conditions for determining the turning points depend not only on the values of plasma parameters themselves but on the plasma parameter gradients as well. These conditions are determined for the case of the electromagnetic waves in ion cyclotron frequency range. Their deviation from the condition applied for the first approach is di scussed.
UR - http://www.scopus.com/inward/record.url?scp=85214877597&partnerID=8YFLogxK
U2 - 10.46813/2024-154-014
DO - 10.46813/2024-154-014
M3 - Article
AN - SCOPUS:85214877597
SN - 1682-9344
VL - 2024
SP - 14
EP - 19
JO - Problems of Atomic Science and Technology
JF - Problems of Atomic Science and Technology
IS - 6
ER -