A combination thermal dissociation/electron impact ionization source for RIB generation

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Description

The flourishing interest in radioactive ion beams (RIBs) with intensities adequate for astrophysics and nuclear physics research place a premium on targets that will swiftly release trace amounts of short lived radio-nuclei in the presence of bulk quantities of target material and ion sources that have the capability of efficiently ionizing the release products. Because of the low probability of simultaneously dissociating and efficiently ionizing the individual atomic constituents of molecules containing the element of interest with conventional, hot-cathode, electron-impact ion sources, the species of interest is often distributed in several mass channels in the form of molecular sideband beams ... continued below

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19 p.

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Alton, G.D.; Cui, B. & Welton, R.F. December 31, 1996.

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  • Alton, G.D. Oak Ridge National Lab., TN (United States)
  • Cui, B. China Institute of Atomic Energy, Beijing (China)
  • Welton, R.F. Oak Ridge Institute of Science and Engineering, TN (United States)

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Description

The flourishing interest in radioactive ion beams (RIBs) with intensities adequate for astrophysics and nuclear physics research place a premium on targets that will swiftly release trace amounts of short lived radio-nuclei in the presence of bulk quantities of target material and ion sources that have the capability of efficiently ionizing the release products. Because of the low probability of simultaneously dissociating and efficiently ionizing the individual atomic constituents of molecules containing the element of interest with conventional, hot-cathode, electron-impact ion sources, the species of interest is often distributed in several mass channels in the form of molecular sideband beams and, consequently, the intensity is diluted. The authors have conceived an ion source that combines the excellent molecular dissociation properties of a thermal dissociator and the high efficiency characteristics of an electron impact ionization source to address these problems. If the concept proves to be a viable option, the source will be used as a complement to the electron beam plasma ion sources already in use at the HRIBF. The design features and principles of operation of the source are described in this article.

Physical Description

19 p.

Notes

INIS; OSTI as DE97002966

Source

  • EMIS-13: international conference on electromagnetic isotope separators and techniques related to their applications, Bad Durkheim (Germany), 23-27 Sep 1996

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  • Other: DE97002966
  • Report No.: CONF-960949--4
  • Grant Number: AC05-96OR22464
  • Office of Scientific & Technical Information Report Number: 442122
  • Archival Resource Key: ark:/67531/metadc674384

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Office of Scientific & Technical Information Technical Reports

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Creation Date

  • December 31, 1996

Added to The UNT Digital Library

  • July 25, 2015, 2:21 a.m.

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  • Jan. 25, 2016, 12:26 p.m.

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Alton, G.D.; Cui, B. & Welton, R.F. A combination thermal dissociation/electron impact ionization source for RIB generation, article, December 31, 1996; Tennessee. (digital.library.unt.edu/ark:/67531/metadc674384/: accessed October 21, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.