scholarly journals Study of electron transport across the magnetic filter of NIO1 negative ion source

2017 ◽  
Author(s):  
P. Veltri ◽  
E. Sartori ◽  
M. Cavenago ◽  
G. Serianni ◽  
M. Barbisan ◽  
...  
Keyword(s):  
Electron Transport ◽  
Ion Source ◽  
Negative Ion ◽  
Magnetic Filter

Electron Transport across Magnetic Filter in Negative Hydrogen Ion Source

2001 ◽  
Vol 40 (Part 1, No. 12) ◽  
pp. 7072-7076 ◽  
Author(s):  
Azusa Fukano ◽  
Masatada Ogasawara
Keyword(s):  
Electron Transport ◽  
Ion Source ◽  
Hydrogen Ion ◽  
Magnetic Filter ◽  
Negative Hydrogen Ion

Uniform H[sup −] ion beam extraction in a large negative ion source with a tent-shaped magnetic filter

2008 ◽  
Vol 79 (2) ◽  
pp. 02C111 ◽  
Author(s):  
H. Tobari ◽  
M. Hanada ◽  
M. Kashiwagi ◽  
M. Taniguchi ◽  
N. Umeda ◽  
...  
Keyword(s):  
Ion Beam ◽  
Ion Source ◽  
Negative Ion ◽  
Beam Extraction ◽  
Magnetic Filter

Dependence of the Performance of the Long Pulse RF Driven Negative Ion Source on the Magnetic Filter Field

2011 ◽  
Author(s):  
W. Kraus ◽  
U. Fantz ◽  
D. Wünderlich ◽  
Yasuhiko Takeiri ◽  
Katsuyoshi Tsumori ◽  
...  
Keyword(s):  
Ion Source ◽  
Negative Ion ◽  
Magnetic Filter ◽  
Long Pulse

Development of a low energy small electron gun to study electron transport in hydrogen negative ion source plasmas

2020 ◽  
Vol 91 (1) ◽  
pp. 013333
Author(s):  
Yoshikatsu Matsumoto ◽  
Masashi Kisaki ◽  
Katsuhiro Shinto ◽  
Haruhisa Nakano ◽  
Mamiko Sasao ◽  
...  
Keyword(s):  
Electron Transport ◽  
Ion Source ◽  
Low Energy ◽  
Electron Gun ◽  
Negative Ion

Integrodifferential models of electron transport for negative ion sources

2015 ◽  
Vol 81 (6) ◽  
Author(s):  
Marco Cavenago
Keyword(s):  
Electron Transport ◽  
Mean Free Path ◽  
Transverse Magnetic ◽  
Ion Source ◽  
Negative Ion ◽  
Larmor Radius ◽  
Magnetic Flux Density ◽  
Atomic Collisions ◽  
One Dimensional ◽  
Electron Production

Thanks to the presence of a transverse magnetic flux density ($B_{x}$ and $B_{y}$ where $z$ is the extraction axis), the undesired extraction of electrons from a negative ion source is reduced and it is due to collisions. The electron transport is studied with a kinetic model, including Vlasov–Poisson effects and atomic collisions. The integrodifferential equations (IDE) resulting from a reduction to a one-dimensional problem (1-D) by integration on characteristic orbits are strongly affected by the trapped orbits, as here evaluated; a kernel calculation with a partial wave approximation is introduced. Dependencies from the local drift velocity $v_{d}$ and effective Larmor radius $L_{e}$ are found. Solutions are investigated in simple cases with a constant electron current (no additional electron production). Equilibrium solution and electron conductivity are analytically obtained. Presheath solutions are discussed; the approximated conversion to differential equations that are adequate for presheath only (with moderated electric field gradient $E_{z,z}>-eB_{x}^{2}/m$) and their numeric solutions coupled to Poisson equation are reported, and compared to iterative IDE solutions. Examples with different values of $L_{e}$ and mean free path (mfp) ratio are described.

Conceptual design of magnetic filter for the prototype negative ion source at ASIPP

2016 ◽  
Vol 113 ◽  
pp. 23-29 ◽  
Author(s):  
Jiang-Long Wei ◽  
Chun-Dong Hu ◽  
Cai-Chao Jiang ◽  
Sheng Liu ◽  
Ling Tao ◽  
...  
Keyword(s):  
Conceptual Design ◽  
Ion Source ◽  
Negative Ion ◽  
Magnetic Filter

Transport processes through magnetic filter in negative ion source

1990 ◽  
Author(s):  
M. Ogasawara ◽  
T. Yamakawa ◽  
F. Sato ◽  
Y. Okumura
Keyword(s):  
Ion Source ◽  
Transport Processes ◽  
Negative Ion ◽  
Magnetic Filter
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