Ion-pair Ionization in CO2-fed Cesium Sputter Sources

Radiocarbon ◽  
2019 ◽  
Vol 61 (6) ◽  
pp. 1805-1812
Author(s):  
John S Vogel ◽  
Alexander M Stolz
Keyword(s):  
Electron Excitation ◽  
Ion Pair ◽  
Ion Source ◽  
Ion Sources ◽  
High Current ◽  
Physical Processes ◽  
Radiation Model ◽  
Anion Production ◽  
Lower Heat ◽  
Pair Ionization

ABSTRACTA collision-radiation model of the solid sample cesium sputter ion source led to the rediscovery of anion production by ion-pair production. The model revealed physical processes that may produce high current outputs from such sources and suggested new ways of obtaining high outputs at lower heat and conductive stress to the source. Primary among these solutions is the electron excitation of primary Cs0 recycled from the sample to provide states that efficiently create chosen anions. Here we look at how the processes might apply to gas-fed ion sources.

Ion Sources for Ion Beam Assisted Thin Film Deposmon

1995 ◽  
Vol 396 ◽  
Author(s):  
Igor V. Svadkovsk ◽  
Anatoly P. Dostanko
Keyword(s):  
Ion Beam ◽  
Ion Source ◽  
Ion Sources ◽  
Inert Gases ◽  
Anode Layer ◽  
High Current ◽  
Ion Beam Assisted Deposition ◽  
Ion Energies ◽  
Extended Range ◽  
Basic Distinction

AbstractTwo types of the ion sources for ion beam assisted deposition using inert gases, oxygen or nitrogen are reported. Their design and operational features are presented. Each of them has the properties of two existing main types of the gridless Hall sources: an end-Hall source and the anode-layer version a closed-drift ion source. Basic distinction of the developed sources is the extended range of ion energies in high-current beam for optimization of deposition, cleaning and etching processes.

Development of high-current ionic liquid ion source toward surface modification

2013 ◽  
Vol 1575 ◽  
Author(s):  
Mitsuaki Takeuchi ◽  
Takuya Hamaguchi ◽  
Hiromichi Ryuto ◽  
Gikan H Takaoka
Keyword(s):  
Ionic Liquid ◽  
Surface Modification ◽  
Flow Rate ◽  
Ion Beam ◽  
Beam Current ◽  
Ion Source ◽  
Ion Sources ◽  
Ion Current ◽  
High Current ◽  
Beam Characteristics

ABSTRACTIonic liquid (IL) ion sources with different emitter tip materials and tip numbers were developed and examined on ion beam characteristics with respect to its ILs wettability. As a result of ion current measurements, the most stable emission current was obtained for the graphite emitter tip and the ion current increased with increase of the tip number. The results indicate that the emitter wettability corresponding to the supplying flow rate and the number of emission site play an important role to stabilize and increase the beam current.

scholarly journals Developing high brightness and high current beams for HIF injectors

2002 ◽  
Vol 20 (4) ◽  
pp. 603-608 ◽  
Author(s):  
LARRY AHLE ◽  
DAVE GROTE ◽  
JOE KWAN
Keyword(s):  
Beam Quality ◽  
National Laboratory ◽  
Large Diameter ◽  
Heavy Ion ◽  
Ion Source ◽  
Ion Sources ◽  
Surface Ionization ◽  
High Current ◽  
Small Surface ◽  
High Brightness

The U.S. Heavy Ion Fusion Virtual National Laboratory is continuing research into ion sources and injectors that simultaneously provide high current (0.5–1.0 A) and high brightness (normalized emittance better than 1.0 π-mm-mr). The central issue of focus is whether to continue pursuing the traditional approach of large surface ionization sources or to adopt a multiaperture approach that transports many smaller “beamlets” separately at low energies before allowing them to merge. For the large surface source concept, the recent commissioning of the 2-MeV injector for the High Current eXperiment has increased our understanding of the beam quality limitations for these sources. We have also improved our techniques for fabricating large diameter aluminosilicate sources to improve lifetime and emission uniformity. For the multiaperture approach, we are continuing to study the feasibility of small surface sources and a RF-induced plasma source in preparation for beamlet merging experiments, while continuing to run computer simulations for better understanding of this alternate concept. Experiments into both architectures will be performed on a newly commissioned ion source test stand at Lawrence Livermore National Laboratory called STS-500. This stand test provides a platform for testing a variety of ion sources and accelerating structures with 500-kV, 17-μs pulses. Recent progress in these areas is discussed as well as plans for future experiments.

Vacuum Arc Plasma Guns and Ion Sources

2005 ◽  
Vol 107 ◽  
pp. 63-68
Author(s):  
Ian G. Brown
Keyword(s):  
Plasma Deposition ◽  
Ion Source ◽  
Ion Sources ◽  
Particle Accelerator ◽  
Vacuum Arc ◽  
Arc Plasma ◽  
High Current ◽  
Plasma Gun ◽  
Metal Plasma ◽  
Plasma Guns

Vacuum arc plasma can be formed using particularly uncomplicated hardware, providing a means for laboratory scale formation of dense and highly-ionized metal plasma. The simplicity and versatility of the approach has led to its widespread use in recent times for both fundamental and technological applications. When embodied in a plasma gun configuration, the source can provide a valuable tool for plasma deposition of metal and metal-containing thin films, including in plasma immersion configurations. When embodied in an ion source configuration, high current beams of metal ions can be formed, and such beams have found good use for ion implantation and particle accelerator injection. Here we briefly review vacuum arc plasma guns and ion sources, outlining some of the hardware embodiments that have been developed at Berkeley and used for various materials modification applications.

A Band Rejection Filter of High Current Radio Frequency Ion Source for Neutral Beam Injector

2021 ◽  
pp. 1-6
Author(s):  
Wei Liu ◽  
Qinglong Cui ◽  
Sheng Liu ◽  
Lizhen Liang ◽  
Yuanzhe Zhao ◽  
...  
Keyword(s):  
Radio Frequency ◽  
Ion Source ◽  
Neutral Beam ◽  
High Current ◽  
Neutral Beam Injector ◽  
Rejection Filter

First plasma of megawatt high current ion source for neutral beam injector of the experimental advanced superconducting tokamak on the test bed

2011 ◽  
Vol 82 (2) ◽  
pp. 023303 ◽  
Author(s):  
Chundong Hu ◽  
Yahong Xie ◽  
Sheng Liu ◽  
Yuanlai Xie ◽  
Caichao Jiang ◽  
...  
Keyword(s):  
Ion Source ◽  
Neutral Beam ◽  
High Current ◽  
Test Bed ◽  
Neutral Beam Injector ◽  
Superconducting Tokamak

A simple, high current gold ion source

1974 ◽  
Vol 45 (8) ◽  
pp. 1030-1032 ◽  
Author(s):  
H. G. Mattes
Keyword(s):  
Ion Source ◽  
High Current ◽  
Gold Ion

Characteristics of a High Current P.I.G. Ion Source at Low Gas Pressure

1967 ◽  
Vol 14 (3) ◽  
pp. 53-59 ◽  
Author(s):  
Mohamed E. Abdelaziz ◽  
Ahmed M. Ghander
Keyword(s):  
Ion Source ◽  
Gas Pressure ◽  
High Current
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