Influence of transversal magnetic field on negative ion extraction process in 3D computer simulation of the multi-aperture ion source

2006 ◽  
Author(s):  
M. Turek
Keyword(s):  
Magnetic Field ◽  
Computer Simulation ◽  
Extraction Process ◽  
Ion Source ◽  
Negative Ion ◽  
Ion Extraction ◽  
3D Computer Simulation ◽  
Transversal Magnetic

A 3D computer simulation of negative ion extraction influenced by electron diffusion and weak magnetic field

2008 ◽  
Author(s):  
M. Turek ◽  
J. Sielanko ◽  
Hans-Jürgen Hartfuss ◽  
Michel Dudeck ◽  
Jozef Musielok ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Computer Simulation ◽  
Weak Magnetic Field ◽  
Negative Ion ◽  
Electron Diffusion ◽  
Ion Extraction ◽  
3D Computer Simulation

Enhancement of negative ion extraction and electron suppression by a magnetic field

1990 ◽  
Author(s):  
J. Bruneteau ◽  
R. Leroy ◽  
M. Bacal ◽  
J. H. Whealton
Keyword(s):  
Magnetic Field ◽  
Negative Ion ◽  
Ion Extraction

Dependence of H− extraction probability on filter magnetic field and gas pressure of a volume-type negative ion source

2006 ◽  
Vol 506-507 ◽  
pp. 522-526 ◽  
Author(s):  
Y. Matsumoto ◽  
M. Nishiura ◽  
K. Matsuoka ◽  
M. Sasao ◽  
M. Wada ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Ion Source ◽  
Gas Pressure ◽  
Negative Ion

scholarly journals Numerical Simulations and the Design of Magnetic Field-Enhanced Electron Impact Ion Source with Hollow Cylinder Structure

2020 ◽  
Vol 2020 ◽  
pp. 1-7
Author(s):  
Guochen Qi ◽  
Di Tian ◽  
Guolun Gao ◽  
Guangda Liu ◽  
Chunling Qiu ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Electron Impact ◽  
Hollow Cylinder ◽  
Impact Ionization ◽  
Transmission Efficiency ◽  
Ion Source ◽  
Ionization Efficiency ◽  
Negative Ion ◽  
Ionization Source ◽  
Electron Intensity

An electron impact ion source-adopted magnetic field-enhanced technology has been designed for enhancing the electron intensity and the ionization efficiency. Based on the ion optic focus mechanism, an electron impact ionization source was designed, and the electron entrance into the ionization chamber was designed with a hollow cylinder structure to improve the ion extraction efficiency. Numerical simulation and optimal geometry were optimized by SIMION 8.0 to provide higher electron intensity and ion transmission efficiency. To improve the electron intensity, the influence of the filament potential and magnetic intensity was investigated, and the values of 70 eV and 150 Gs were chosen in our apparatus. Based on the optimal parameters, the air in the lab and oxygen gas was detected by the homemade apparatus, and the ion intensity was detected in the positive and negative ion modes, respectively. The homemade electron impact ion source apparatus has the potential to enhance ionization efficiency applied in the mass spectrometer ionization source.

3D modelling of negative ion extraction from a negative ion source

2010 ◽  
Vol 50 (10) ◽  
pp. 105011 ◽  
Author(s):  
S. Mochalskyy ◽  
A.F. Lifschitz ◽  
T. Minea
Keyword(s):  
3D Modelling ◽  
Ion Source ◽  
Negative Ion ◽  
Ion Extraction

Improvement of uniformity of the negative ion beams by tent-shaped magnetic field in the JT-60 negative ion source

2014 ◽  
Vol 85 (2) ◽  
pp. 02B314 ◽  
Author(s):  
Masafumi Yoshida ◽  
Masaya Hanada ◽  
Atsushi Kojima ◽  
Mieko Kashiwagi ◽  
Larry R. Grisham ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Ion Beams ◽  
Ion Source ◽  
Negative Ion
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