Measurement of Plasma Parameters in Low Temperature High Density Hollow Cathode Plasma Jet Working in Magnetic Field

2006 ◽  
Vol 46 (5-6) ◽  
pp. 445-450 ◽  
Author(s):  
P. Virostko ◽  
Z. Hubička ◽  
P. Adámek ◽  
M. Čada ◽  
J. Olejníček ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Low Temperature ◽  
Hollow Cathode ◽  
Plasma Jet ◽  
High Density ◽  
Cathode Plasma ◽  
Plasma Parameters

Spatial Distribution of Plasma Parameters in DC-Energized Hollow Cathode Plasma Jet

2010 ◽  
Vol 50 (9) ◽  
pp. 878-885 ◽  
Author(s):  
S. Leshkov ◽  
P. Kudrna ◽  
M. Chichina ◽  
J. Klusoň ◽  
I. Picková ◽  
...  
Keyword(s):  
Spatial Distribution ◽  
Hollow Cathode ◽  
Plasma Jet ◽  
Cathode Plasma ◽  
Plasma Parameters

Measurements of plasma parameters during BaxSr1−x TiO3 thin films deposition by double hollow cathode plasma jet system

2006 ◽  
Vol 56 (S2) ◽  
pp. B1283-B1289 ◽  
Author(s):  
J. Olejníček ◽  
Z. Hubička ◽  
P. Virostko ◽  
A. Deyneka ◽  
L. Jastrabík ◽  
...  
Keyword(s):  
Thin Films ◽  
Hollow Cathode ◽  
Plasma Jet ◽  
Cathode Plasma ◽  
Plasma Parameters

Double hollow cathode plasma jet-low temperature method for the TiO2−xNx photoresponding films

2010 ◽  
Vol 55 (5) ◽  
pp. 1548-1556 ◽  
Author(s):  
S. Kment ◽  
P. Kluson ◽  
Z. Hubicka ◽  
J. Krysa ◽  
M. Cada ◽  
...  
Keyword(s):  
Low Temperature ◽  
Hollow Cathode ◽  
Plasma Jet ◽  
Cathode Plasma ◽  
Temperature Method

A Study of Plasma Parameters in Hollow Cathode Plasma Jet in Pulse Regime

2010 ◽  
Vol 50 (9) ◽  
pp. 886-891 ◽  
Author(s):  
P. Kudrna ◽  
J. Klusoň ◽  
S. Leshkov ◽  
M. Chichina ◽  
I. Picková ◽  
...  
Keyword(s):  
Hollow Cathode ◽  
Plasma Jet ◽  
Pulse Regime ◽  
Cathode Plasma ◽  
Plasma Parameters

Resistive MHD modes in hollow cathodes external plasma

2021 ◽  
Author(s):  
Giulia Becatti ◽  
Francesco Burgalassi ◽  
Fabrizio Paganucci ◽  
Matteo Zuin ◽  
Dan M Goebel
Keyword(s):  
Magnetic Field ◽  
Hollow Cathode ◽  
Electric Propulsion ◽  
Axial Magnetic Field ◽  
Mhd Equations ◽  
Linear Perturbation ◽  
Plasma Parameters ◽  
Hollow Cathodes ◽  
Plume Region ◽  
Helical Mode

Abstract A significant number of plasma instabilities occur in the region just outside of hollow cathodes, depending on the injected gas flow, the current level and the application of an external magnetic field. In particular, the presence of an axial magnetic field induces a helical mode, affecting all the plasma parameters and the total current transported by the plasma. To explore the onset and behavior of this helical mode, the fluctuations in the plasma parameters in the current-carrying plume outside of a hollow cathode discharge have been investigated. The hollow cathode was operated at a current of 25 A, and at variable levels of propellant flow rate and applied magnetic fields. Electromagnetic probes were used to measure the electromagnetic fluctuations, and correlation analysis between each of the probe signals provided spatial-temporal characterization of the generated waves. Time-averaged plasma parameters, such as plasma potential and ion energy distribution function, were also collected in the near-cathode plume region by means of scanning emissive probe and retarding potential analyzer. The results show that the helical mode exists in the cathode plume at sufficiently high applied magnetic field, and is characterized by the presence of a finite electromagnetic component in the axial direction, detectable at discharge currents $\geq$ 25 A. A theoretical analysis of this mode reveals that one possible explanation is consistent with the hypotheses of resistive magnetohydrodynamics, which predicts the presence of helical modes in the forms of resistive kink. The analysis has been carried out by linear perturbation of the resistive MHD equations, from which it is possible to obtain the dispersion relation of the mode and find the $k-\omega$ unstable branch associated with the instability. These findings provided the basis for more detailed investigation of resistive MHD modes and their effect in the plume of hollow cathodes developed for electric propulsion application.

Design of Plasma Discharge Structure for Surface Treatment of PP Film

2016 ◽  
Vol 693 ◽  
pp. 77-83 ◽  
Author(s):  
Yi Fang Wen ◽  
Tai Yong Wang ◽  
Hong Wei Wang
Keyword(s):  
Low Temperature ◽  
Hollow Cathode ◽  
Plasma Discharge ◽  
High Energy ◽  
Environment Pollution ◽  
Low Temperature Plasma ◽  
Cathode Plasma ◽  
Temperature Plasma ◽  
Discharge Structure ◽  
Before And After

Low temperature plasma, compared to liquid phase treatment, can effectively overcome the environment pollution, high energy loss and high cost as its high activity. The low temperature plasma, which is not only fairly friendly to the environment but also of less resource consumption, also can realize the cleaning, activating and grafting treatment for materials surface. Based on the numerical model of CRFHCP (Capacitive Radio Frequency Hollow Cathode Plasma) hollow cathode plasma discharge, the key point to affect plasma discharge was analyzed and the morphology of PP film before and after hollow cathode plasma discharge was analyzed. The results showed that the structure of plasma hollow cathode discharge can effectively improved the chemical behaviors of PP film.

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