scholarly journals Energy distribution of the compact microwave ion source for extremely low voltage ion extraction

2002 ◽  
Vol 73 (2) ◽  
pp. 758-760 ◽  
Author(s):  
Y. Gotoh ◽  
K. Nakajima ◽  
T. Hagiwara ◽  
H. Tsuji ◽  
J. Ishikawa
Keyword(s):  
Energy Distribution ◽  
Low Voltage ◽  
Ion Source ◽  
Ion Extraction ◽  
Microwave Ion Source

Ge+ ion extraction from a microwave ion source

1992 ◽  
Vol 63 (4) ◽  
pp. 2444-2446 ◽  
Author(s):  
N. Sakudo ◽  
T. Matsuo ◽  
T. Seki ◽  
H. Koike ◽  
Y. Usami
Keyword(s):  
Ion Source ◽  
Ion Extraction ◽  
Microwave Ion Source

Cesium-Enhanced R. F. Magnetron Deposition of Carbon Nitride and Diamond-Like Carbon Films

1997 ◽  
Vol 498 ◽  
Author(s):  
I. H. Murzin ◽  
M. A. Hussain ◽  
G. S. Tompa
Keyword(s):  
Carbon Nitride ◽  
Low Voltage ◽  
Carbon Films ◽  
Ion Source ◽  
Diamond Like Carbon ◽  
Carbon Ions ◽  
Nitrogen Gas ◽  
Carbon Target ◽  
Ion Extraction ◽  
Surface Work

ABSTRACTWe report the design, manufacturing, and testing of a new cesium enhanced negative carbon ion source that can be useful to synthesize hard and/or electron emitting carbon nitride and diamond-like carbon (DLC) thin films. The design of the source includes a conventional magnetron-sputtering gun, low voltage ion extraction lenses, and a cesium oven to provide cesium vapor for formation of a fractional mono layer of Cs on the carbon target. Cs reduces the surface work function of the carbon target and enhances the emission of negative carbon ions. Argon and argon-nitrogen gas mixtures were used to ignite and sustain the plasma in the chamber. We compare the properties of carbon nitride and DLC films deposited with and without cesium. Nitrogen composition in the Ar-N2 gas mixture was observed to be an important process parameter affecting mechanical properties of the film. The effect of the Cs oven temperature on deposition rate and current absorbed at the substrate was also investigated for RF powers from 0 to 150 W.

Development of microwave ion source for industrial applications

2014 ◽  
Vol 85 (2) ◽  
pp. 02C306 ◽  
Author(s):  
N. Takahashi ◽  
H. Murata ◽  
H. Mitsubori ◽  
J. Sakuraba ◽  
T. Soga ◽  
...  
Keyword(s):  
Industrial Applications ◽  
Ion Source ◽  
Microwave Ion Source

scholarly journals Development of new magnets for a microwave ion source

2018 ◽  
Author(s):  
Nobuaki Takahashi ◽  
Hirohiko Murata ◽  
Hitoshi Mitsubori ◽  
Tomohiro Soga ◽  
Yasushi Aoki ◽  
...  
Keyword(s):  
Ion Source ◽  
Microwave Ion Source

Minipermanent magnet high-current microwave ion source

2006 ◽  
Vol 77 (3) ◽  
pp. 03A305 ◽  
Author(s):  
Zhizhong Song ◽  
Shixiang Peng ◽  
Jinxiang Yu ◽  
Jianchuan Ming ◽  
Zhongxi Yuan ◽  
...  
Keyword(s):  
Ion Source ◽  
High Current ◽  
Microwave Ion Source

scholarly journals Far-Field Plume Characterization of a 100-W Class Hall Thruster

Aerospace ◽  
2020 ◽  
Vol 7 (5) ◽  
pp. 58
Author(s):  
Thibault Hallouin ◽  
Stéphane Mazouffre
Keyword(s):  
Energy Distribution ◽  
Current Density ◽  
Low Voltage ◽  
Ion Current ◽  
Hall Thruster ◽  
Far Field ◽  
Ion Energy ◽  
Ion Energy Distribution ◽  
The Core ◽  
Ion Current Density

The 100 W-class ISCT100-v2 Hall Thruster (HT) has been characterized in terms of far-field plume properties. By means of a Faraday Cup and a Retarding Potential Analyzer, both the ion current density and the ion energy distribution function have been measured over a 180 ∘ circular arc for different operating points. Measurements are compared to far-field plume characterizations performed with higher power Hall thrusters. The ion current density profiles remain unchanged whatever the HT input power, although an asymptotic limit is observed in the core of the plume at high discharge voltages and anode mass flow rates. In like manner, the ion energy distribution functions reveal that most of the beam energy is concentrated in the core of the plume [ − 40 ∘ ; 40 ∘ ] . Moreover, the fraction of low energy ion populations increases at large angles, owing to charge exchange and elastic collisions. Distinct plume regions are identified; they remain similar to the one described for high-power HTs. An efficiency analysis is also performed in terms of current utilization, mass utilization, and voltage utilization. The anode efficiency appears to be essentially affected by a low voltage utilization, the latter originating from the large surface-to-volume ratio inherent to low-power HTs. Experimental results also show that the background pressure clearly affects the plume structure and content.

Sign in / Sign up

Export Citation Format

Share Document