Vacuum arc ion sources

Vacuum arc ion sources

Vacuum Arc Ion Sources

Vacuum Arc Ion Sources I. Brown Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA A bstract The vacuum arc ion source has evolved into a more or less standard laboratory tool for the production of high- current beams of metal ions, and is

Vacuum Arc Ion Sources - NASA/ADS

The vacuum arc ion source has evolved into a more or less standard laboratory tool for the production of high-current beams of metal ions, and is now used in a number of different embodiments at many laboratories around the world. Applications include primarily ion implantation for material surface modification research, and good performance has been obtained for the injection of high-current ...

(PDF) Vacuum Arc Ion Sources - ResearchGate

The vacuum arc ion source is unique among the arsenal of ion sources available to the experimenter in its capabilities for producing high current beams of metal ions, thereby providing a tool ...

Recent advances in vacuum arc ion sources - CORE

Abstract Intense beams of metal ions can be formed from a vacuum arc ion source. Broadbeam extraction is convenient, and the time-averaged ion beam current delivered downstream can readily be in the tens of milliamperes range. The vacuum arc ion source has ...

A Theoretical Analysis of Vacuum Arc Thruster Performance

POLK: VACUUM ARC THRUSTER PERFORMANCE 3 and the ion mass flow rate as where e is the charge on an electron, Mi is the mass of the ion, (2-) represents the mean inverse charge state, (4) (2-1) = E-. fz z Z and fz is the ratio of the current due to a single

Reducing ion beam noise of vacuum arc ion sources -

Vacuum arc ion sources are known for delivering high currents of metal ion beams. By Langmuir probe and Faraday cup measurements it is shown that fluctuations of the ion beam current are due to the fluctuations of plasma density which in turn are due to the explosive nature of plasma production at cathode spots. Humphries and co-workers and later Oks and co-workers have shown that beam ...

1./2. Fundamentals of Ion Sources

Suggested Literature - Books We have added references through-out the presentations- the presentations will be posted on the USPAS web Additional resources for ion source literature Ion Sources, Huashun S. Zhang, Jianrong Zhang, Springer- Verlag, 2000 Handbook of Ion Sources, Bernhard H. Wolf, CRC Press, 1995

Temporal Development of Ion Beam Mean Charge State

Vacuum arc ion sources, commonly also known as "Mevva" ion sources, are used to generate intense pulsed metal ion beams. It is known that the mean charge state of the ion beam lies between 1 and 4, depending on cathode material, arc current, arc pulse duration, presence or absence of magnetic field at the cathode, as well background gas pressure.

The Physics and Technology of Ion Sources Wiley

Vacuum Arc Ion Sources (Pages: 257-284) Efim Oks Ian G. Brown Summary PDF Request permissions CHAPTER 14 Negative Ion Sources (Pages: 285-310) Junzo Ishikawa Summary PDF Request permissions CHAPTER 15 Ion Sources for Heavy Ion Fusion ...

Vacuum arc ion sources: Review of Scientific Instruments:

4/6/1998· The vacuum arc is a rich source of highly ionized metal plasma that can be used to make a high current metal ion source. Vacuum arc ion sources have been developed for a range of applications including ion implantation for materials surface modification, particle accelerator injection for fundamental nuclear physics research, and other fundamental and applied purposes.

Metal vapor vacuum arc ion sources (Conference)

22/7/2020· We have developed a family of metal vapor vacuum are (MEVVA) high current metal ion sources. The sources were initially developed for the production of high current beams of metal ions for heavy ion synchrotron injection for basic nuclear physics research; more

Cathodic Arc Deposition - Plasma Applications Group

A. Anders, "Ion charge state distributions of vacuum arc plasmas: The origin of species," Phys. Rev. E, vol. 55, pp. 969-981, 1997. A. Anders, "Plasma fluctuations, local partial Saha equilibrium, and the broadening of vacuum-arc ion charge state distributions

Vacuum arc ion sources: A review Request PDF

Vacuum-arc metal ion sources and vacuum-arc-like gas ion sources are discussed. Experiments are presented that focus on the short-pulse plasma composition and ion charge state distribution.

Metal plasma immersion ion implantation and deposition

Tailored, highquality films of any solid metal, metal alloy, or carbon (amorphous diamond) can be formed by MPI using filtered vacuum arc plasma sources, and compounds such as oxides or nitrides can be formed by adding a gas flow to the deposition.

Status of vacuum arc ion source development for

1/9/2005· Vacuum arc ion sources operating with uranium produce an ensemble of uranium ions with a mean charge state of about 3 containing a fraction of 30% of uranium fourfold charged ions. To optimize the ion source for a higher U 4+ fraction all essential plasma parameters and geometry of the ion source on the mean charge state were investigated.

Upgraded vacuum arc ion source for metal ion

Vacuum arc ion sources have been made and used by a large number of research groups around the world over the past twenty years. The first generation of vacuum arc ion sources (dubbed "Mevva," for metal vapor vacuum arc) was developed at Lawrence Berkeley National Laboratory in the 1980s.

3D modeling and simulation of arc deflection behavior in vacuum

3.1 Ion velocityof vacuum arc The simulation results of vacuum arc deflection behav-ior along xoy, xoz or the center between xoy and xoz cross-section are shown in Fig.3. From Fig.3, it can be seen that the deflection position of vacuum arc center is

Temporal development of ion beam mean charge state in

Vacuum arc ion sources, commonly also known as "Mevva" ion sources, are used to generate intense pulsed metal ion beams. It is known that the mean charge state of the ion beam lies between 1 and 4, depending on cathode material, arc current, arc pulse duration, presence or absence of magnetic field at the cathode, as well as background gas pressure.

Recent advances in vacuum arc ion sources - UNT

Intense beams of metal ions can be formed from a vacuum arc ion source. Broadbeam extraction is convenient, and the time-averaged ion beam current delivered downstream can readily be in the tens of milliamperes range. The vacuum arc ion source has for these reasons found good application for metallurgical surface modification--it provides relatively simple and inexpensive access to high dose ...

Vacuum Arc Ion Sources - arXiv.org e-Print archive

Vacuum Arc Ion Sources I. Brown Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA Abstract The vacuum arc ion source has evolved into a more or less standard laboratory tool for the production of highcurrent beams of metal ions, and is - now

Metal vapor vacuum arc ion sources Raduga: Review

A brief review is presented of the Raduga 14 repetitively pulsed metal vapor vacuum arc ion sources. Their operation principles and functional ranges are described. The Raduga ion sources provide single and multielement implantation. These advantages are achieved by using not only pure singleelement or mixed ion fluxes, but also pulsed beam sequences with controllable ...

Recent advances in vacuum arc ion sources - ScienceDirect

Intense beams of metal ions can be formed from a vacuum arc ion source. This kind of source works well for most of the solid metals of the Periodic Ta

Ion Source Design for Industrial Applications AIAA Journal

Pressure ionization: its role in metal vapour vacuum arc plasmas and ion sources 1 January 1999 Plasma Sources Science and Technology, Vol. 1, No. 4 Compact ion beam source for feedback control of plasma instabilities

Measurement of total ion current from vacuum arc

The total ion current generated by a vacuum arc plasma source was measured. The discharge system investigated allowed ion collection from the arc plasma streaming through a hemispherical mesh anode with geometric transparency of 72 percent.

Vacuum arc ion sources - NASA/ADS

1/10/1994· The vacuum arc is a rich source of highly ionized metal plasma that can be used to make a high current metal ion source. Vacuum arc ion sources have been developed for a range of applications including ion implantation for materials surface modification, particle accelerator injection for fundamental nuclear physics research, and other fundamental and applied purposes. The beam parameters can ...

Cathode and plasma phenomena in vacuum-arc sources of

of vacuum neutron tubes with arc ion sources (increasing neutron yield, enhancing stability, and lengthening lifetime) were mainly focused on optimizing the source design and electrical circuit and on increasing the ef´Čüciency of hydrogen isotope extraction from ...

Numerical study on ion filtering of titanium hydride cathodic vacuum arc

Plasma Sources Science and Technology PAPER Numerical study on ion filtering of titanium hydride cathodic vacuum arc plasma through a double-layer extraction grid To cite this article: Chaohui Lan et al 2017 Plasma Sources Sci. Technol. 26 065001 View the

Vacuum Arc Ion Sources - The Physics and Technology of

Alternative Triggering of the Vacuum Arc Reduction in Ion Beam Noise and Increased Pulse Stability Generation of Gaseous Ions Source Embodiments LBNL Mevva Sources HCEI Titan Sources NPI Raduga Sources GSI Varis Sources Conclusion The Physics ...

Generation of multicomponent ion beams by a vacuum

abstract = "This paper presents the results of time-of-flight mass spectrometry studies of the elemental and mass-to-charge state compositions of metal ion beams produced by a vacuum arc ion source with compound cathode (WC- Co0.5, Cu- Cr0.25, Ti- Cu0.1).

GSI - miscellaneous

Vacuum Arc Ion Sources: Charge State Enhancement and Arc Voltage The Metal Vapor Vacuum ion source (MEWA) has been developed for the production of ion beams for a wide range of metal ions. The ion charge states for most heavy elements created by ...

Frequently Vacuum arc ion sources

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