Electric Potential Near The Extraction Region In Negative Ion Sources With Surface Produced Negative Ions

2011 ◽  
Author(s):  
A. Fukano ◽  
A. Hatayama ◽  
Yasuhiko Takeiri ◽  
Katsuyoshi Tsumori
Keyword(s):  
Electric Potential ◽  
Negative Ions ◽  
Ion Sources ◽  
Negative Ion ◽  
Extraction Region

Analysis of the double-ion plasma in the extraction region in hydrogen negative ion sources

2013 ◽  
Author(s):  
T. Fukuyama ◽  
S. Okuda ◽  
A. Fukano ◽  
K. Tsumori ◽  
H. Nakano ◽  
...  
Keyword(s):  
Ion Sources ◽  
Negative Ion ◽  
Extraction Region ◽  
Ion Plasma

scholarly journals Code-to-code benchmark tests for 3D simulation models dedicated to the extraction region in negative ion sources

2017 ◽  
Author(s):  
S. Nishioka ◽  
S. Mochalskyy ◽  
F. Taccogna ◽  
A. Hatayama ◽  
U. Fantz ◽  
...  
Keyword(s):  
Simulation Models ◽  
Ion Sources ◽  
3D Simulation ◽  
Negative Ion ◽  
Extraction Region ◽  
Benchmark Tests

Analysis of the H− ion emissive surface in the extraction region of negative ion sources

2012 ◽  
Vol 83 (2) ◽  
pp. 02A721 ◽  
Author(s):  
N. Kameyama ◽  
T. Fukuyama ◽  
S. Wada ◽  
S. Kuppel ◽  
K. Tsumori ◽  
...  
Keyword(s):  
Ion Sources ◽  
Negative Ion ◽  
Extraction Region

Spatial structure of electric potential near the extraction region in Cs-seeded H[sup −] ion sources

2008 ◽  
Vol 79 (2) ◽  
pp. 02A525 ◽  
Author(s):  
A. Fukano ◽  
J. Hanatani ◽  
T. Matsumiya ◽  
A. Hatayama
Keyword(s):  
Spatial Structure ◽  
Electric Potential ◽  
Ion Sources ◽  
Extraction Region

Carbon Nitride Film Formation by Low Energy Positive and Negative Ion Beam Deposition

1996 ◽  
Vol 438 ◽  
Author(s):  
N. Tsubouchi ◽  
Y. Horino ◽  
B. Enders ◽  
A. Chayahara ◽  
A. Kinomura ◽  
...  
Keyword(s):  
Carbon Nitride ◽  
Rutherford Backscattering Spectrometry ◽  
Ion Beam ◽  
High Vacuum ◽  
Negative Ions ◽  
Low Energy ◽  
Ultra High Vacuum ◽  
Negative Ion ◽  
Nitride Film ◽  
Ion Energy

AbstractUsing a newly developed ion beam apparatus, PANDA (Positive And Negative ions Deposition Apparatus), carbon nitride films were prepared by simultaneous deposition of mass-analyzed low energy positive and negative ions such as C2-, N+, under ultra high vacuum conditions, in the order of 10−6 Pa on silicon wafer. The ion energy was varied from 50 to 400 eV. The film properties as a function of their beam energy were evaluated by Rutherford Backscattering Spectrometry (RBS), Fourier Transform Infrared spectroscopy (FTIR) and Raman scattering. From the results, it is suggested that the C-N triple bond contents in films depends on nitrogen ion energy.

Note on radiationless transitions involving three-body collisions

1936 ◽  
Vol 32 (3) ◽  
pp. 482-485 ◽  
Author(s):  
R. A. Smith
Keyword(s):  
Continuous Spectrum ◽  
Negative Ions ◽  
Bound State ◽  
Excess Energy ◽  
Negative Ion ◽  
Positive Ions ◽  
Continuous State ◽  
Direct Formation ◽  
Three Body ◽  
Positive Ion

When an electron makes a transition from a continuous state to a bound state, for example in the case of neutralization of a positive ion or formation of a negative ion, its excess energy must be disposed of in some way. It is usually given off as radiation. In the case of neutralization of positive ions the radiation forms the well-known continuous spectrum. No such spectrum due to the direct formation of negative ions has, however, been observed. This process has been fully discussed in a recent paper by Massey and Smith. It is shown that in this case the spectrum would be difficult to observe.

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