Results 261 to 270 of about 309,738 (293)

Pressure-yield characteristics of rf ion-sources

Nuclear Instruments and Methods, 1974
Abstract A system which analyses the components of the charged particle beam current just after the rf ion-source has been used to measure the yields of the components as a function of the pressure at which the gas is fed into the ion-source. The yield of an HH + beam is more than that of an H + beam at a lower hydrogen gas feed and the situation ...
S.N. Misra, S.K. Gupta
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A compact rf-driven, dc ion source

Review of Scientific Instruments, 1990
A helium atom beam has been extracted from a rf plasma source with beam energies ranging from 22 to 35 kV. At optimum conditions, a beam of approximately 15 mA equivalent current of 30-keV neutral atoms displays a minimum angular beam divergence of 0.3°.
J. C. Dooling, K. G. Moses
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Alternative modeling methods for plasma-based Rf ion sources

Review of Scientific Instruments, 2015
Rf-driven ion sources for accelerators and many industrial applications benefit from detailed numerical modeling and simulation of plasma characteristics. For instance, modeling of the Spallation Neutron Source (SNS) internal antenna H− source has indicated that a large plasma velocity is induced near bends in the antenna where structural failures are ...
Seth A, Veitzer, Madhusudhan, Kundrapu, Peter H, Stoltz, Kristian R C, Beckwith   +3 more
openaire   +2 more sources

RF-Plasma Source Commissioning in Indian Negative Ion Facility

AIP Conference Proceedings, 2011
The Indian program of the RF based negative ion source has started off with the commissioning of ROBIN, the inductively coupled RF based negative ion source facility under establishment at Institute for Plasma research (IPR), India. The facility is being developed under a technology transfer agreement with IPP Garching.
Singh, M. J., Bandyopadhyay, M., Bansal, G., Gahlaut, A., Soni, J., Kumar, Sunil, Pandya, K., Parmar, K. G., Sonara, J., Yadava, Ratnakar, Chakraborty, A. K., Kraus, W., Heinemann, B., Riedl, R., Obermayer, S., Martens, C., Franzen, P., Fantz, Ursel, Takeiri, Yasuhiko, Tsumori, Katsuyoshi   +19 more
openaire   +1 more source

CHARACTERISTICS OF LOW POWER RF ION SOURCE

Problems of Atomic Science and Technology
The main characteristics of a low-power inductive RF ion source designed for use in a compact nuclear microprobe at the IAP NASU are presented. The source operates at a frequency of 45 MHz with RF power below 10 W. The extracted beam current reaches up to 3.5 µA through a 0.6 mm diameter aperture. The beam is composed of 1H+, 2H+, and 3H+ ions, and the
V.I. Voznyi, A.G. Ponomarev, D.V. Magilin, D.P. Shulha, V.A. Rebrov   +4 more
openaire   +1 more source

Characterization of an RF plasma ion source for ion implantation

AIP Conference Proceedings, 2012
A novel inductively coupled RF plasma ion source has been developed for use in a beamline ion implanter. Ion density data have been taken with an array of four Langmuir probes spaced equally at the source extraction arc slit. These provide ion density uniformity information as a function of source pressure, RF power and gas mixture composition.
Peter M. Kopalidis, Zhimin Wan
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Multi-antenna RF Ion Source at a High RF Power Level

AIP Conference Proceedings, 2009
A multi‐antenna radio‐frequency ion source with a Faraday shield is newly tested at a high RF power level in a large area negative ion source of 1/5th scale of the Large Helical Device‐NNBI ion source. Inductively coupled dense hydrogen plasmas were generated uniformly over an area of 25×25 cm2 at an RF input power up to 300 kW for a 10 ms pulse ...
Y. Oka, T. Shoji, O. Kaneko, Y. Takeiri, K. Tsumori, M. Osakabe, K. Ikeda, K. Nagaoka, E. Asano, M. Sato, T. Kondo, M. Shibuya, S. Komada, Elizabeth Surrey, Alain Simonin   +14 more
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Plasma diagnostics on RF inductively coupled ion source

25th Anniversary, IEEE Conference Record - Abstracts. 1998 IEEE International Conference on Plasma Science (Cat. No.98CH36221), 1998
Summary form only given, as follows. A test bed for producing low density plasmas of high fractional ionization and evaluating various plasma diagnostics has been constructed. At present, the system consists of a 10 cm. diameter, commercially-built ion beam system, vacuum chamber, scanning Langmuir probe system, microwave interferometer, and quadrupole
null Wei Guo, W. Lanter, R.L.C. Wu, C.A. DeJoseph   +3 more
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RF Heating in Electron Cyclotron Resonance Ion Sources

AIP Conference Proceedings, 2011
ECRIS—Electron Cyclotron Resonance Ion Sources are able to feed accelerators with intense currents of highly charged ions. In ECRIS a high density—high temperature plasma is generated by means of the Electron Cyclotron Resonance Heating inside a B‐min, MHD stable trap. The state of the art about the principal heating mechanisms will be given. The paper
D. Mascali, S. Gammino, L. Celona, G. Ciavola, Cynthia K. Phillips, James R. Wilson   +5 more
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Plasma density measurement of RF ion source

2015
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Voznyy, V.I., Miroshnichenko, V.I., Mordyk, S.M., Nagornyy, A.G., Nagornyy, D.A., Storizhko, V.E., Shulha, D.P.   +6 more
openaire   +1 more source