Results from E-Mevva and Z-Mevva: Development of new sources of intense high charge state heavy-ion beams

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The authors are exploring a new approach for heavy ion beam injection (e.g., into the Relativistic Heavy Ion Collider (RHIC) at BNL), as well as new sources of intense high charge state ions to be mounted on a relatively low voltage platform for high energy ion implantation. While conventional Metal Vapor Vacuum Arc (Mevva) ion sources can produce up to hundreds of milliamps or more of several-times-ionized metal ions (e.g., U3+), the recent results from Batalin et al. indicate that the addition of an energetic electron beam (E-Mevva) may lead to considerably higher charge states. An alternative way to produce ... continued below

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14 p.

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Hershcovitch, A.; Johnson, B. M.; Liu, F.; Anders, A. & Brown, I. G. November 1997.

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Description

The authors are exploring a new approach for heavy ion beam injection (e.g., into the Relativistic Heavy Ion Collider (RHIC) at BNL), as well as new sources of intense high charge state ions to be mounted on a relatively low voltage platform for high energy ion implantation. While conventional Metal Vapor Vacuum Arc (Mevva) ion sources can produce up to hundreds of milliamps or more of several-times-ionized metal ions (e.g., U3+), the recent results from Batalin et al. indicate that the addition of an energetic electron beam (E-Mevva) may lead to considerably higher charge states. An alternative way to produce the electron beam is Z-Mevva, in which a z-discharge plasma is used to enhance multiple ionization. As the vacuum arc plasma plume expands into a magnetized drift region, a z-discharge is triggered in the drifting metal plasma. The ions are then extracted and analyzed using a time-of-flight system. The authors report initial results using these schemes with applied discharge and electron beam voltages from 1 to 2 kV.

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14 p.

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INIS; OSTI as DE98001165

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  • 7. international conference on ion sources, Taormina (Italy), 7-13 Sep 1997

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  • Other: DE98001165
  • Report No.: BNL--64731
  • Report No.: CONF-970958--
  • Grant Number: AC02-76CH00016;AC03-76SF00098
  • Office of Scientific & Technical Information Report Number: 548701
  • Archival Resource Key: ark:/67531/metadc689757

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  • November 1997

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  • Aug. 14, 2015, 8:43 a.m.

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  • Nov. 9, 2015, 2:12 p.m.

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Hershcovitch, A.; Johnson, B. M.; Liu, F.; Anders, A. & Brown, I. G. Results from E-Mevva and Z-Mevva: Development of new sources of intense high charge state heavy-ion beams, article, November 1997; Upton, New York. (digital.library.unt.edu/ark:/67531/metadc689757/: accessed September 25, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.