scholarly journals Secondary Electron Emission from Dielectric Materials of a Hall Thruster with Segmented Electrodes

2003 ◽  
Author(s):  
A. Dunaevsky ◽  
Y. Raitses ◽  
N.J. Fisch
Keyword(s):  
Electron Emission ◽  
Secondary Electron ◽  
Secondary Electron Emission ◽  
Dielectric Materials ◽  
Hall Thruster

Characterization of electronic structure in dielectric materials by making use of the secondary electron emission

2013 ◽  
Vol 13 (2) ◽  
pp. 396-402 ◽  
Author(s):  
Han S. Uhm ◽  
Joon H. Choi ◽  
Guangsup Cho ◽  
Byoung J. Park ◽  
Ran J. Jung ◽  
...  
Keyword(s):  
Electronic Structure ◽  
Electron Emission ◽  
Secondary Electron ◽  
Secondary Electron Emission ◽  
Dielectric Materials

scholarly journals Measurements of secondary electron emission effects in the Hall thruster discharge

2006 ◽  
Vol 13 (1) ◽  
pp. 014502 ◽  
Author(s):  
Y. Raitses ◽  
A. Smirnov ◽  
D. Staack ◽  
N. J. Fisch
Keyword(s):  
Electron Emission ◽  
Secondary Electron ◽  
Secondary Electron Emission ◽  
Hall Thruster

Characteristics of wall sheath and secondary electron emission under different electron temperatures in a Hall thruster

2014 ◽  
Vol 23 (7) ◽  
pp. 075203 ◽  
Author(s):  
Ping Duan ◽  
Hai-Juan Qin ◽  
Xin-Wei Zhou ◽  
An-Ning Cao ◽  
Long Chen ◽  
...  
Keyword(s):  
Electron Emission ◽  
Secondary Electron ◽  
Secondary Electron Emission ◽  
Hall Thruster

Plasma–wall interaction inside a Hall thruster

2002 ◽  
Vol 68 (4) ◽  
pp. 305-319 ◽  
Author(s):  
SUBRATA ROY ◽  
B. P. PANDEY
Keyword(s):  
Electron Emission ◽  
Secondary Electron ◽  
Secondary Electron Emission ◽  
Ionization Rate ◽  
Electron Velocity ◽  
Hall Thruster ◽  
Third Order ◽  
Order Polynomial ◽  
Sputter Yield ◽  
Wall Interaction

The dynamics of a Hall thruster is investigated numerically in the presence of a plasma–wall interaction. The plasma–wall interaction is a function of the wall potential, which in turn is determined by the secondary electron emission and sputtering yield. In the present work, the effect of secondary electron emission and sputter yield have been considered simultaneously. Owing to disparate temporal scales, ions and neutrals have been described by a set of time-dependent equations while electrons are considered in a steady state. Based on the experimental observations, a third-order polynomial in electron temperature is used to calculate the ionization rate. The changes in the plasma density, potential and azimuthal electron velocity due to the sputter yield are significant in the acceleration region. The change in ion and electron velocity and temperature is small. The neutral velocity, which decreases initially, starts increasing towards the exit consistent with the computed neutral density profile. The results are qualitatively compared with the experiments.

Sign in / Sign up

Export Citation Format

Share Document