Characteristics of microwave ECR ion thruster powered with plate antenna in cross-magnetic field: Standing wave, skin effect, and mode transition

2021 ◽  
Vol 28 (3) ◽  
pp. 033510
Author(s):  
S. H. Fu ◽  
Z. F. Ding
Keyword(s):  
Magnetic Field ◽  
Standing Wave ◽  
Skin Effect ◽  
Mode Transition ◽  
Ion Thruster ◽  
Plate Antenna

Open Localization in Micro LeadFrame Package Using Space Domain Reflectometry

2013 ◽  
Author(s):  
J. Gaudestad ◽  
V. Talanov ◽  
A. Orozco ◽  
M. Marchetti
Keyword(s):  
Magnetic Field ◽  
Radio Frequency ◽  
Standing Wave ◽  
High Resistance ◽  
Space Domain ◽  
The Past ◽  
Open Defects ◽  
Rf Electronics ◽  
Rf Signal ◽  
The Magnetic Field

Abstract In the past couple years, Space Domain Reflectometry (SDR) has become a mainstream method to locate open defects among the major semiconductor manufacturers. SDR injects a radio frequency (RF) signal into the open trace creating a standing wave with a node at the open location. The magnetic field generated by the standing wave is imaged with a SQUID sensor using RF electronics. In this paper, we show that SDR can be used to non-destructively locate high resistance failures in Micro LeadFrame Packages (MLP).

Cascade Atoms in a Bichromatic Standing Wave: A Magnetic-Field-Free Rectified Force Trap

1996 ◽  
pp. 393-394
Author(s):  
H. Pu ◽  
T. Cai ◽  
N. P. Bigelow ◽  
T. T. Grove ◽  
P. L. Gould
Keyword(s):  
Magnetic Field ◽  
Standing Wave

scholarly journals Обнаружение высокочастотных альфвеновских колебаний в омических разрядах сферического токамака Глобус-М2

2021 ◽  
Vol 47 (12) ◽  
pp. 17
Author(s):  
И.М. Балаченков ◽  
Ю.В. Петров ◽  
В.К. Гусев ◽  
Н.Н. Бахарев ◽  
В.И. Варфоломеев ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Standing Wave ◽  
High Frequency ◽  
Low Density ◽  
Frequency Range ◽  
High Frequency Oscillations ◽  
Model Predictions ◽  
Mode Excitation ◽  
Order Of Magnitude ◽  
Frequency Chirping

In Globus-M2 ohmic discharges with low density, by means of Mirnov coils array, magnetic field oscillations with frequencies in 1 MHz range were detected. Frequency range of these oscillations significantly exceed the range of TAE and RSAE frequencies, which were previously observed on Globus-M and Globus-M2 tokamaks, and their amplitude, contrary, turned out to be up to an order of magnitude lower. It was found that high frequency oscillations are interrelated with suprathermal electron fraction. At the same time the observed instability seems to have Alfvenic nature, since its frequency correlates well with Alfven frequency scaling. It was also found that magnetic perturbation always forms standing wave with predominantly low toroidal wavenumbers, including n = 0 structure, which makes gap (e.g. TAE) mode excitation impossible. Frequency chirping during single bursts with δω ~ √t is consistent with hole-clump model predictions.

Power dissipation mode transition by a magnetic field

2002 ◽  
Vol 81 (14) ◽  
pp. 2529-2531 ◽  
Author(s):  
S. J. You ◽  
C. W. Chung ◽  
K. H. Bai ◽  
H. Y. Chang
Keyword(s):  
Magnetic Field ◽  
Power Dissipation ◽  
Mode Transition

Anomalous skin effect for a plasma column in a magnetic field

1973 ◽  
Vol 10 (3) ◽  
pp. 349-358 ◽  
Author(s):  
R. G. Storer ◽  
C. Meaney
Keyword(s):  
Magnetic Field ◽  
Plasma Column ◽  
Electron Density Distribution ◽  
Skin Effect ◽  
Axial Magnetic Field ◽  
Complete Solution ◽  
Low Frequency ◽  
Anomalous Skin Effect ◽  
Plasma Radius ◽  
Cylindrical Plasma Column

The influence of a steady axial magnetic field on the anomalous penetration of low frequency electromagnetic fields into a cylindrical plasma column is investigated by considering a plasma with a Gaussian electron density distribution. For this model, a complete solution is obtained for Boltzmann's equation coupled to Maxwell's equations, and the fields calculated exactly. The results show dramatic changes of the internal fields for small changes of the applied magnetic field when the average Lamour radius of the electrons is of the order of the plasma radius.

Microwave Skin Effect of Thin Films in a Magnetic Field

1976 ◽  
Vol 15 (11) ◽  
pp. 2231-2232
Author(s):  
Takao Kato ◽  
Shigenori Hiramatsu ◽  
Hiromasa Hirakawa
Keyword(s):  
Magnetic Field ◽  
Thin Films ◽  
Skin Effect

Steady-state solutions for the penetration of a rotating magnetic field into a plasma column

1981 ◽  
Vol 26 (3) ◽  
pp. 441-453 ◽  
Author(s):  
Ieuan R. Jones ◽  
Waheed N. Hugrass
Keyword(s):  
Magnetic Field ◽  
Steady State ◽  
Plasma Column ◽  
Skin Effect ◽  
Rotation Frequency ◽  
Rotating Magnetic Field ◽  
Electron Current ◽  
Plasma Cylinder ◽  
Resistive Plasma ◽  
Steady State Solutions

The penetration of an externally applied rotating magnetic field into a plasma cylinder is examined. Steady-state solutions of an appropriate set of magneto-fluid equations show that, provided the amplitude and rotation frequency of the field are suitably chosen, the penetration is not limited by the usual classical skin effect. The enhanced penetration of the rotating field is accompanied by the generation of a unidirectional azimuthal electron current which is totally absent in a purely resistive plasma cylinder.

scholarly journals Effects of magnetic field configuration on thrust performance in a miniature microwave discharge ion thruster

2007 ◽  
Vol 102 (12) ◽  
pp. 123304 ◽  
Author(s):  
Naoji Yamamoto ◽  
Shinya Kondo ◽  
Takayuki Chikaoka ◽  
Hideki Nakashima ◽  
Hirokazu Masui
Keyword(s):  
Magnetic Field ◽  
Microwave Discharge ◽  
Field Configuration ◽  
Magnetic Field Configuration ◽  
Ion Thruster ◽  
Thrust Performance
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