Improvement in brightness of multicusp-plasma ion source

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The beam brightness of a multicusp-plasma ion source has been substantially improved by optimizing the source configuration and extractor geometry. The current density of a 2 keV He{sup +} beam extracted from a 7.5-cm-diameter source operating at 2.5 kW RF power is {approx}100 mA/cm{sup 2}, which is {approx}10 times larger than that of a beam extracted from a 5-cm-diameter source operating at 1 kW RF power. A smaller focused beam spot size is achieved with a counter-bored extractor instead of a conventional (''through-hole'') extractor, resulting another order of magnitude improvement in beam current density. Measured brightness can be as high ... continued below

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Ji, Q.; Jiang, X.; King, T-J.; Leung, K-N.; Standiford, K. & Wilde, S.B. May 24, 2002.

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The beam brightness of a multicusp-plasma ion source has been substantially improved by optimizing the source configuration and extractor geometry. The current density of a 2 keV He{sup +} beam extracted from a 7.5-cm-diameter source operating at 2.5 kW RF power is {approx}100 mA/cm{sup 2}, which is {approx}10 times larger than that of a beam extracted from a 5-cm-diameter source operating at 1 kW RF power. A smaller focused beam spot size is achieved with a counter-bored extractor instead of a conventional (''through-hole'') extractor, resulting another order of magnitude improvement in beam current density. Measured brightness can be as high as 440 A/cm{sup 2}Sr, which represents a 30 times improvement over prior work.

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INIS; OSTI as DE00799567

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  • 46th International Conference on Electron, Ion and Photon Beam Technology and Nanofabrication, Anaheim, CA (US), 05/28/2002--05/31/2002

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  • Report No.: LBNL--49343
  • Grant Number: AC03-76SF00098
  • Office of Scientific & Technical Information Report Number: 799567
  • Archival Resource Key: ark:/67531/metadc738545

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Office of Scientific & Technical Information Technical Reports

Reports, articles and other documents harvested from the Office of Scientific and Technical Information.

Office of Scientific and Technical Information (OSTI) is the Department of Energy (DOE) office that collects, preserves, and disseminates DOE-sponsored research and development (R&D) results that are the outcomes of R&D projects or other funded activities at DOE labs and facilities nationwide and grantees at universities and other institutions.

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  • May 24, 2002

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  • Oct. 19, 2015, 7:39 p.m.

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  • April 4, 2016, 3:21 p.m.

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Ji, Q.; Jiang, X.; King, T-J.; Leung, K-N.; Standiford, K. & Wilde, S.B. Improvement in brightness of multicusp-plasma ion source, article, May 24, 2002; Berkeley, California. (digital.library.unt.edu/ark:/67531/metadc738545/: accessed November 24, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.