Influence of neutral depletion on blue core in argon helicon plasma

2021 ◽  
Vol 28 (7) ◽  
pp. 073505
Author(s):  
Tianliang Zhang ◽  
Ruilin Cui ◽  
Wanying Zhu ◽  
Qian Yuan ◽  
Jiting Ouyang ◽  
...  
Keyword(s):  
Helicon Plasma ◽  
Neutral Depletion

Observations of neutral depletion and plasma acceleration in a flowing high-power argon helicon plasma

2008 ◽  
Vol 15 (7) ◽  
pp. 072115 ◽  
Author(s):  
C. Mark Denning ◽  
Matt Wiebold ◽  
John E. Scharer
Keyword(s):  
High Power ◽  
Plasma Acceleration ◽  
Helicon Plasma ◽  
Neutral Depletion

Spatio-temporal behavior of density jumps and the effect of neutral depletion in high-density helicon plasma

2019 ◽  
Vol 26 (5) ◽  
pp. 053504
Author(s):  
S. Isayama ◽  
S. Shinohara ◽  
T. Hada ◽  
S. H. Chen
Keyword(s):  
High Density ◽  
Temporal Behavior ◽  
Helicon Plasma ◽  
Spatio Temporal ◽  
Neutral Depletion

Fabrication of Carbon Nanotube Triode Using Helicon Plasma Cvd with Electroplated Nico Catalyst

2003 ◽  
Vol 772 ◽  
Author(s):  
Masakazu Muroyama ◽  
Kazuto Kimura ◽  
Takao Yagi ◽  
Ichiro Saito
Keyword(s):  
Carbon Nanotubes ◽  
Carbon Nanotube ◽  
Metal Catalyst ◽  
Ni Catalyst ◽  
Plasma Cvd ◽  
Helicon Plasma ◽  
Plasma Enhanced Cvd ◽  
Turn On ◽  
Aligned Carbon Nanotubes ◽  
Vertically Aligned

AbstractA carbon nanotube triode using Helicon Plasma-enhanced CVD with electroplated NiCo catalyst has been successfully fabricated. Isolated NiCo based metal catalyst was deposited at the bottom of the cathode wells by electroplating methods to control the density of carbon nanotubes and also reduce the activation energy of its growth. Helicon Plasma-enhanced CVD (HPECVD) has been used to deposit nanotubes at 400°C. Vertically aligned carbon nanotubes were then grown selectively on the electroplated Ni catalyst. Field emission measurements were performed with a triode structure. At a cathode to anode gap of 1.1mm, the turn on voltage for the gate was 170V.

scholarly journals The first observation of 4D tomography measurement of plasma structures and fluctuations

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Chanho Moon ◽  
Kotaro Yamasaki ◽  
Yoshihiko Nagashima ◽  
Shigeru Inagaki ◽  
Takeshi Ido ◽  
...  
Keyword(s):  
Steady State ◽  
Three Dimensional ◽  
Axial Direction ◽  
Axial Position ◽  
Entire Cross Section ◽  
Helicon Plasma ◽  
Emission Profile ◽  
Dimensional Measurement ◽  
Tomography System ◽  
Three Dimensional Measurement

AbstractA tomography system is installed as one of the diagnostics of new age to examine the three-dimensional characteristics of structure and dynamics including fluctuations of a linear magnetized helicon plasma. The system is composed of three sets of tomography components located at different axial positions. Each tomography component can measure the two-dimensional emission profile over the entire cross-section of plasma at different axial positions in a sufficient temporal scale to detect the fluctuations. The four-dimensional measurement including time and space successfully obtains the following three results that have never been found without three-dimensional measurement: (1) in the production phase, the plasma front propagates from the antenna toward the end plate with an ion acoustic velocity. (2) In the steady state, the plasma emission profile is inhomogeneous, and decreases along the axial direction in the presence of the azimuthal asymmetry. Furthermore, (3) in the steady state, the fluctuations should originate from a particular axial position located downward from the helicon antenna.

The Evolution of Discharge Mode Transition in Helicon Plasma Through ICCD Images

2015 ◽  
Vol 43 (10) ◽  
pp. 3702-3706 ◽  
Author(s):  
Chao Ma ◽  
Gao Zhao ◽  
Yu Wang ◽  
Zhongwei Liu ◽  
Lijun Sang ◽  
...  
Keyword(s):  
Mode Transition ◽  
Discharge Mode ◽  
Helicon Plasma

scholarly journals Modeling of profile effects for inductive helicon plasma sources

1996 ◽  
Vol 24 (1) ◽  
pp. 152-160 ◽  
Author(s):  
Y. Mouzouris ◽  
J.E. Scharer
Keyword(s):  
Helicon Plasma ◽  
Plasma Sources
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